ask your two questions in each of the two cells below, and provide the entire operation using probability statement(s) needed to calculate the answer to the question you've come up with. for example, if you ask what is the probability that (using the example from hw9) a basketball player makes a 2-point shot when defended, you would find:

Answers

Answer 1

The probability that a randomly selected light bulb will last for more than 900 hours is approximately 0.0228 or 2.28%. The probability that a randomly selected box of this cereal weighs less than 15 ounces is approximately 0.0228 or 2.28%.

Solution 1 :-

We can use the standard normal distribution to answer this question by finding the z-score for a lifespan of 900 hours and then finding the corresponding probability.

z = (x - μ) / σ

where:

x = lifespan we want to find the probability for = 900 hours

μ = mean lifespan = 800 hours

σ = standard deviation = 50 hours

Plugging in the values, we get:

[tex]z = (900 - 800) / 50 = 2[/tex]

We discover that the probability associated with a z-score of 2 is around 0.0228 using a conventional normal distribution table or calculator.

Solution 2:

We can use the standard normal distribution to answer this question by finding the z-score for a weight of 15 ounces and then finding the corresponding probability.

z = (x - μ) / σ

where:

x = weight we want to find the probability for = 15 ounces

μ = mean weight = 16 ounces

σ = standard deviation = 0.5 ounces

Plugging in the values, we get:

[tex]z = (15 - 16) / 0.5 = -2[/tex]

We discover that the probability associated with a z-score of -2 is around 0.0228 using a basic normal distribution table or calculator.

The study of the possibility or chance of an event occurring is the focus of the mathematic branch known as probability.  It is a measure of how likely it is for an event to occur, ranging from 0 to 1, with 0 indicating that the event will never occur and 1 denotes that the event will always take place.

Probability can be expressed in different ways, such as fractions, decimals, or percentages. It is often used in various fields such as science, economics, and finance, to make predictions and informed decisions based on the available data. Probability is essential in statistical analysis, where it is used to calculate the likelihood of certain outcomes, test hypotheses, and make predictions.

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Complete Question:-

Ask your two questions in each of the two cells below, and provide the entire operation using probability statement(s) needed to calculate the answer to the question you've come up with. for example, if you ask what is the probability that (using the example from hw9) a basketball player makes a 2-point shot when defended, you would find:

Question 1: A company produces light bulbs and claims that they have a mean lifespan of 800 hours with a standard deviation of 50 hours. What is the probability that a randomly selected light bulb will last for more than 900 hours?

Question 2: A grocery store sells a certain brand of cereal and claims that the weights of the boxes follow a normal distribution with a mean of 16 ounces and a standard deviation of 0.5 ounces. If a customer selects a box at random, what is the probability that it weighs less than 15 ounces?


Related Questions

what is the probability of choosing a card that has digit 1 on it?

Answers

The probability of choosing a card from a deck of 52 cards that has digit 1 on it is 1/13 .

A standard deck of 52 playing cards has 4 suits ,

hearts, diamonds, clubs, and spades.

And 13 ranks as 2 through 10, Jack, Queen, King, and Ace in each suit.

To find the probability of choosing a card that has digit 1 on it,

Count the number of cards that satisfy this condition and divide by the total number of cards in the deck.

There are four cards in each suit that have the digit 1 on them.

The Ace of clubs, the Ace of diamonds, the Ace of hearts, and the Ace of spades.

The total number of cards in the deck is 52.

The probability of choosing a card that has digit 1 on it is,

= 4/52

= 1/13

Therefore, the probability of choosing a card that has the digit 1 on it is equal to 1/13.

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A local carpet store sells carpet at $5. 25 per square foot. If they are carpeting a room that measures 9 feet by 6 feet , what is the cost of the carpet ? math problem

Answers

The total cost of the carpeting for the room is [tex]$283.50[/tex].

To calculate the cost of carpeting a room, we need to find the total area of the room and multiply it by the cost per square foot of the carpet. In this case, the room measures 9 feet by 6 feet, so its area is 9 x 6 = 54 square feet.

The carpet is sold at [tex]$5.25[/tex] per square foot, the cost of the carpeting for the room can be calculated by multiplying the total area of the room (54 square feet) by the cost per square foot ([tex]$5.25[/tex]). The cost of the carpet for the room is therefore:[tex]54[/tex] sq ft x[tex]$5.25[/tex] /sq ft = [tex]$283.50[/tex].

This cost only covers the carpeting itself, and does not include any additional expenses such as padding or installation. It's always a good idea to get a detailed estimate from a professional carpet installer to ensure that you have a clear understanding of the total cost of the project.

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If 10 tulips cost $7. 80, how much would 1 tulip cost?

Answers

The cost of one tulip when the cost of ten tulip $7.80  is given by $0.78.

Cost of ten tulip is equal to $7.80.

To find the cost of 1 tulip, we can use unitary method .

Let us consider the cost of one tulip be '$x' .

If 10 tulips cost $7.80, then 1 tulip would cost 1/10th of $7.80.

This implies,

10x  = $7.80

Multiply both the side of the equation by ( 1/10 ) we get,

⇒ 1/10 × 10x  =  1/10 × $7.80

⇒ x = $0.78

Therefore, using the given cost of ten tulip the one tulip would cost $0.78.

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El denominador de una fracción es 3 unidades menor que su numerador, y la fracción es 2,1 unidades mayor que su recíproco. ¿Cuál es esta fracción si tanto su numerador como su denominador son números enteros?

Answers

Sea x el numerador de la fracción. Entonces, el denominador de la fracción es x - 3. La fracción es x/(x-3).

Además, sabemos que la fracción es 2,1 unidades mayor que su recíproco, que es (x-3)/x. Por lo tanto, podemos escribir la siguiente ecuación:

x/(x-3) = (x-3)/x + 2,1

Para resolver esta ecuación, primero simplifiquemos la fracción a la derecha del signo igual:

x/(x-3) = ((x-3) + 2,1x)/x
x/(x-3) = (3,1x - 3)/x

Ahora podemos multiplicar ambos lados de la ecuación por (x-3) para eliminar el denominador de la fracción a la izquierda:

x = (3,1x - 3)(x-3)/x
x = 3,1x - 3
0,1x = 3
x = 30

Por lo tanto, el numerador de la fracción es 30, y el denominador es (30 - 3) = 27. La fracción es 30/27, que se puede simplificar dividiendo ambos términos por 3 para obtener 10/9.

Por lo tanto, la fracción es 10/9.

Which statement regarding the equation below is true?

x² + y²-8x+12y+34 = 0

A) It has an area of 34.
B) It has an area of 18.
C) It has a center at (-8, 12).
D) It has a diameter of 18 units.

Answers

The correct statement regarding the circle with equation x² + y²-8x+12y+34 = 0 is given as follows:

Neither.

What is the equation of a circle?

The equation of a circle of center [tex](x_0, y_0)[/tex] and radius r is given by:

[tex](x - x_0)^2 + (y - y_0)^2 = r^2[/tex]

The equation for this problem is given as follows:

x² + y² - 8x + 12y + 34 = 0.

Completing the squares, we obtain the equation as follows:

(x - 4)² + (y + 6)² = -34 + 16 + 36

(x - 4)² + (y + 6)² = 18.

Hence the center and radius are given as follows:

The center is of (4, -6).The radius is of sqrt(18) = 4.2 units.The diameter is of 2r = 2 x 4.2 = 8.4 units.

The area of the circle is given as follows:

A = 2πr = 2π x 4.2 = 26 square units.

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a poll for a statewide election has a margin of error of percentage points. how many voters should be sampled for a confidence interval? round up to the nearest whole number.

Answers

The number of voters that should be sampled for a confidence interval depends on the desired level of confidence and the margin of error.

A larger sample size generally leads to a smaller margin of error and a higher level of confidence in the accuracy of the results. However, the relationship between sample size and margin of error is not linear, meaning that doubling the sample size will not necessarily halve the margin of error.
To calculate the required sample size, a formula can be used that takes into account the margin of error, level of confidence, and population size.
the number of voters that should be sampled for a confidence interval depends on several factors and cannot be determined without more information.
To determine the required sample size, you can use the following formula:
n = (Z^2 * p * (1-p)) / E^2

Where:
- n is the sample size
- Z is the Z-score (usually 1.96 for a 95% confidence interval)
- p is the estimated proportion of the population (usually 0.5 for the worst-case scenario)
- E is the margin of error (in decimal form)

Hence, without the specific margin of error, we cannot provide the exact sample size needed.

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The chef filled a big pot with 3. 7 cups of water and filled a smaller pot with 7. 3 cups of water. Which pot has more water?

Answers

Using a unitary method, we have identified that the smaller pot has more water.

To compare the amount of water in the two pots, we need to find a common unit of measurement. In this case, both pots are measured in cups, so we can simply compare the number of cups in each pot. The chef filled the larger pot with 3.7 cups of water, and the smaller pot with 7.3 cups of water.

Now, we can use a unitary method to compare the two quantities. Let's assume that one cup is our unit of measurement. To find out how many cups of water are in the smaller pot, we can divide 7.3 by 1 cup. This gives us 7.3 cups of water. To find out how many cups of water are in the larger pot, we can divide 3.7 by 1 cup. This gives us 3.7 cups of water.

As we can see, the smaller pot has more water than the larger pot.

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What are the correct characteristics of the following rational function?

Answers

Answer: Crosses the x-axis at 3

touches the x-axis at -2

has a vertical asymptote at x=1

has a horizontal asymptote at y=2

Step-by-step explanation:

Determine if the point is part of the line: y= -3x-4 ; (-1,-1)

Answers

The point (-1,-1) is a part  of the line "y = -3x -4", because it satisfies the equation of line.

In order to determine if the point (-1,-1) is part of the line y = -3x - 4, we substitute the values of "x" and "y" into the equation and check if the equation holds true.

The point is (-1,-1), We Substitute x = -1 and y = -1 into the equation,

We get,

-1 = -3 × (-1) - 4,

On Simplifying,

We get,

-1 = 3 - 4

-1 = -1

Since both sides of the equation are equal, we can conclude that the point (-1,-1) is part of the line y = -3x - 4.

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the number of tickets sold for different concerts at a single venue in the past month. would you be more interested in looking at the mean, median, or mode? state your reasoning.

Answers

For analyzing the number of tickets sold for different concerts at a single venue in the past month, all three measures, mean, median, and mode, can provide useful information depending on the specific question we want to answer.

- The mean is the average number of tickets sold per concert, and it can help us understand the overall attendance at the venue. However, the mean can be skewed by a few high or low outliers, especially if there are some very popular or unpopular concerts that attract significantly more or fewer attendees than usual.

- The median is the middle value in the dataset, and it can help us identify the typical or typical range of ticket sales for concerts at the venue. The median is less affected by outliers than the mean, so it can be a more robust indicator of central tendency.

- The mode is the most frequent value in the dataset, and it can help us identify the most popular or least popular concerts at the venue. However, if there are several concerts with similar attendance numbers, there may not be a clear mode, or there may be multiple modes.

Therefore, it depends on the research question at hand, and all three measures should be considered together to gain a more complete understanding of the ticket sales for different concerts at a single venue in the past month.

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Match each type of lever with the correct diagram.
Match each type of lever with the correct diagram.
Thanks

Answers

Answer:

Step-by-step explanation:

2,3,1

urgent help pls. full working out needed

Answers

The number of cubes that can be fitted in the crate is 22

Finding the number of cubes:

To solve this problem, first calculated the volume of the crate and the volume of one cube, both of which are measured in cubic units (cubic centimeters, in this case).

We then divided the volume of the crate by the volume of one cube to find the number of cubes that can fit inside the crate.

Here we have

The dimensions of the crate are 2.4m × 1.8 m ×  1.1 m

The volume of the crate

= 2.4m × 1.8 m ×  1.1 m

=  4.752 m³

Given that side of the cube = 60 cm = 0.6 m

Hence, Volume of the cube = (0.6 m)³ = 0.216 m³  

Using the formula,

Number of boxes = Volume of box/ Volume of the cube

= 4.752 m³/0.216 m³ = 22

Therefore,

The number of cubes that can be fitted in the crate is 22

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It takes 3 egg to make two dozen cookies about what fracion of an aegg are in two cookiies

Answers

Answer:1/4

Step-by-step explanation:3*2/(2*12)=1/4 so our answer is 1/4.

I NEED HELP ASAP PLEASE

Answers

Answer:

Using the Pythagorean Theorem to find the height of this right triangle:

[tex] {h}^{2} + {8}^{2} = {(2 \sqrt{19} )}^{2} [/tex]

[tex] {h}^{2} + 64 = 76[/tex]

[tex] {h}^{2} = 12[/tex]

[tex]h = 2 \sqrt{3} [/tex]

From this, the area of this right triangle is:

[tex] \frac{1}{2} (8)(2 \sqrt{3} ) = 8 \sqrt{3} [/tex]

A is the correct answer.

Answer:

Step-by-step explanation

Use Pythagorean Theorem:

8² + b² = (2√19)²

64 + b² = 4 × 19

64 + b² = 76

64 -64 + b² = 76 -64

b² = 12

√b² = √12

b = √4 · 3

b = 2√3

This is the height - use in the area formula:

1/2(8)(2√3)

4(2√3)

8√3

Quadrilateral RUST has a vertex at R (1, 5). R 20 T S What are the coordinates of R'after the translation (x, y) (x + 1, y - 1). followed by a dilation by a scale factor of 3, centered at the origin? -​

Answers

The coordinates of R'' after the translation and dilation are (6, 12).

The translation (x, y) → (x + 1, y - 1) shifts the point R(1, 5) to the point R'(2, 4) by adding 1 to the x-coordinate and subtracting 1 from the y-coordinate.

The dilation with scale factor 3 centered at the origin multiplies the coordinates of R' by 3, resulting in:

R''(32, 34) = R''(6, 12)

Therefore, the coordinates of R'' after the translation and dilation are (6, 12).

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an amount of 150€ is divided among four people in such a way that each following person gets half as much as the previous one gets. what are the partial amounts?​

Answers

Answer:

the first person gets €80, the second person gets €40, the third person gets €20 and the fourth person gets €10.

Step-by-step explanation:

Let’s call the amount of money that the first person gets “x”. Then, the second person gets half of x, which is x/2. The third person gets half of x/2, which is x/4. The fourth person gets half of x/4, which is x/8.

The sum of these amounts should be equal to 150€.

x + x/2 + x/4 + x/8 = 150

Multiplying both sides by 8 gives:

8x + 4x + 2x + x = 1200

15x = 1200

x = 80

Therefore, the first person gets €80, the second person gets €40, the third person gets €20 and the fourth person gets €10.

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I hope this helps! Let me know if you have any other questions.

mrs. candy has a large box of lollipops, chocolate bars, and caramels. she wants to give each of the nine children in her neighborhood three pieces of candy. taking into account that each type of candy is available in a quantity greater than 30, in how many ways can mrs. candy distribute the candy?

Answers

There are 122,305,536 ways Mrs. Candy can distribute the candy.

How to calculate total number of ways to distribte the candy?

There are three types of candy, and each child receives three pieces, so a total of nine children will receive a total of 27 pieces of candy. Let's consider each type of candy separately.

First, let's consider the lollipops. Mrs. Candy can give each child up to three lollipops, and there are more than 30 lollipops available.

Using the stars and bars method, we can represent the distribution of lollipops as a sequence of 3 bars (|) and 30 stars (), where the bars represent the boundaries between each child's lollipops.

For example, the sequence " * | * * * | * * * * | * * *" represents a distribution where the first child receives 2 lollipops, the second child receives 3 lollipops, the third child receives 4 lollipops, and the fourth child receives 2 lollipops.

Using this method, we can count the number of possible distributions of lollipops as:

(30 + 3 - 1) choose (3 - 1) = 32 choose 2 = 496

Next, let's consider the chocolate bars. Mrs. Candy can give each child up to three chocolate bars, and there are more than 30 chocolate bars available.

Using the same method as before, we can represent the distribution of chocolate bars as a sequence of 3 bars and 30 stars. Counting the number of possible distributions of chocolate bars, we get:

(30 + 3 - 1) choose (3 - 1) = 32 choose 2 = 496

Finally, let's consider the caramels. Using the same method as before, we can represent the distribution of caramels as a sequence of 3 bars and 30 stars. Counting the number of possible distributions of caramels, we get:

(30 + 3 - 1) choose (3 - 1) = 32 choose 2 = 496

To find the total number of ways Mrs. Candy can distribute the candy, we need to multiply the number of ways of distributing each type of candy together, since the distributions are independent.

Thus, the total number of possible distributions of candy is:

496 * 496 * 496 = 122,305,536

Therefore, there are 122,305,536 ways Mrs. Candy can distribute the candy.

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what is the probability that the mean lifetime of 25 randomly selected tires of this type will exceed than 42,000 miles?

Answers

The probability that the mean lifetime of 25 randomly selected tires of this type will exceed than 42,000 miles is 25.14.

To break this problem, we need to use the standard normal distribution, assuming that the distribution of tire continuances is roughly normal. We can regularize the value of 42,000 using the formula

z = ( x- μ)/ σ

where x is the value of interest( 42,000 long hauls), μ is the mean tire continuance( 40,000 long hauls), and σ is the standard deviation( 3,000 miles). Plugging in the values, we get

z = ( 42,000- 40,000)/ 3,000 = 0.67

Using a standard normal distribution table or calculator, we can find the probability that an aimlessly named tire will last further than 42,000 long miles by looking up the area to the right of z = 0.67 under the standard average wind. This probability is roughly 25.14.

thus, the probability that a tire named arbitrarily from this brand will last more than 42,000 miles is roughly 25.14.

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The correct question is given below-

A particular brand of tires lasts an average of 40,000 miles with a standard deviation of 3,000 miles. What is the probability a tire selected at random lasts more than 42,000 miles?

Find the sum of the following series. Round to the nearest hundredth if necessary.

Answers

Required sum of the given series is 3069.00

What is the sum of a geometric series?

We can use the formula for the sum of a finite geometric progression:

[tex]S_n = \frac{a(1 - r^n)}{(1 - r)}[/tex] where

[tex]S_n[/tex] is the sum of the first n terms of the series.

Here,

The series 3+6+12+... is a geometric progression with the first term a=3 and the common ratio r=2. To find the sum of the series.

We can see that the common ratio r=2 is greater than 1, so the series does not have a finite sum.

We can find the sum of the first few terms to get an approximation of the sum. Let's find the sum of the first 10 terms:

[tex]S_{10} = \frac{3(1 - 2^{10})}{(1 - 2)} \\ = \frac{3(1 - 1024)}{(-1)} \\ = 3(1023 = 3069[/tex]

So the sum of the first 10 terms is 3069. To round this to the nearest hundredth, we can write the answer as 3069.00.

Hence, required sum of the given series is 3069.00

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Needd help please!!!

Answers

If you're hoping to land a job, carry out your research and compile a list of potential questions to inquire. Doing this will communicate that you are seriously interested in the position and significantly increase your chances of being chosen.

How to explain the verb

It should be noted that to master something, practise is key. If I had an interview coming up, I'd practice my answers prior to entering the room.

If you long to receive money for your efforts, get active by filing for a job. During the interviewing process, it may be nerve-racking but with the right preparation, nothing should obstruct you from showing the interviewer why you're suited for the role. Here are some helpful tips:

When you are ready to attend an interview, jot down a list of queries to ask the recruiter. This will indicate that you have investigated the company and undeniably demonstrate a passionate interest in the occupation.

If they question if you comprehend anything regarding the corporation, you need to respond with assurance. Doing so implies that you are well informed on the business and have done your research beforehand.

Always don your professional attire when participating in an interview; slipping into casual garments against the recruiter in smart-looking attire could cause discomfort or result in failure at garnering the job.

If during the interview, you happen to feel uneasy, breathe deeply and take some time to chill out. This way, conducting oneself calmly, any queries answered will make more sense.

In respect of disclosing personal weaknesses, truthfully give an account but without overly criticising yourself. Exhibiting self-comprehension as well as striving towards improving these areas will reflect self-awareness and commitment to development.

Finally, thank the interviewer for their time once the interview reaches its conclusion. Doing so displays politeness and appreciation.

Up to this point, solely exhibiting positive impressions, even after affirmative results, extend gratitude with a follow-up note. Doing this illustrates excitement for the job whilst displaying admiration for the opportunity.

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What factor is represented by the blue shading in the model? [ Hint: Remember shading represents numerator]
A. 4/5

B. 1 2/3

C. 1 4/5

D. 4/15

Answers

Answer:

The answer to your problem is, A. [tex]\frac{4}{5}[/tex]

Step-by-step explanation:

We would need to count the entire shaded area both green and blue for the numerator. Which shown the denominator will be all the colors yellow, blue and green squares.

Total Green and blue 24, numerator

Total Green, blue Yellow 30, denominator

Which then divide 24 ÷ 30.

Simplify: divide numerator and denominator by 6

= [tex]\frac{4}{5}[/tex]

Thus the answer to your problem is, A. [tex]\frac{4}{5}[/tex]

The answer is A because

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Answers

Line GH is 2 units.
Line G’H’ is 5 units
2*x=5
X=5/2
The answer is 5/2 :)

Answerrrrrrrrr pleaseeeeeee

Answers

Answer:

x= 1 and y= 10

Step-by-step explanation:

y= 4x+6 (1)

x= 21-2y (2)

sub (1) into (2):

x= 21-2(4x+6)

x= 21-8x-12

9x= 9

x= 1 (3)

sub (3) into (1):

y= 4(1)+6

= 10

20 POINTS!
A department store is holding a drawing to give away free shopping sprees. There are 9 customers who have entered the drawing: 2 live in the town of Gaston, 2 live in Pike, and 5 live in Wells. Two winners will be selected at random. What is the probability that the first winner lives in Gaston and the second lives in Pike? Write your answer as a fraction in the simplest form.

Answers

Answer:

There are a total of 9 customers who have entered the drawing. The probability that the first winner lives in Gaston is 2/9, since there are 2 customers from Gaston out of 9 total customers.

Once the first winner is selected, there will be 8 customers remaining, out of which 2 live in Pike. Therefore, the probability that the second winner lives in Pike, given that the first winner lives in Gaston, is 2/8 or 1/4.

To find the probability that the first winner lives in Gaston and the second winner lives in Pike, we need to multiply the probabilities of the two events:

P(Gaston first and Pike second) = P(first winner from Gaston) * P(second winner from Pike, given that first winner is from Gaston)

P(Gaston first and Pike second) = (2/9) * (1/4)

P(Gaston first and Pike second) = 2/36

Therefore, the probability that the first winner lives in Gaston and the second winner lives in Pike is 2/36, which simplifies to 1/18.

fruits are important sources of dietary fiber and vitamins (especially vitamin c). from a sack of fruit containing three oranges, two apples, and three bananas, a random sample of four pieces of fruit is selected. if x is the number of whole oranges and y is the number of whole apples in the sample, find the joint probability distribution and marginal probability distributions of x and y.

Answers

The joint probability distribution, we first need to find the total number of ways to select four fruits from the sack, which is:C(8,4) = 70.

Next, we need to find the number of ways to select x whole oranges and y whole apples. There are C(3,x) ways to select x whole oranges and C(2,y) ways to select y whole apples. Once the oranges and apples have been selected, there are C(3-x+2-y, 4-x-y) ways to select the remaining fruits. Therefore, the number of ways to select x whole oranges and y whole apples is:

C(3,x) * C(2,y) * C(3-x+2-y, 4-x-y)

Finally, we can calculate the joint probability distribution by dividing the number of ways to select x whole oranges and y whole apples by the total number of ways to select four fruits:

P(X = x, Y = y) = C(3,x) * C(2,y) * C(3-x+2-y, 4-x-y) / C(8,4)

The marginal probability distributions can be found by summing the joint probability distribution over the appropriate variable. For example, to find the marginal probability distribution for x, we sum the joint probability distribution over all values of y:

P(X = x) = Σ P(X = x, Y = y) for all y

Similarly, to find the marginal probability distribution for y, we sum the joint probability distribution over all values of x:

P(Y = y) = Σ P(X = x, Y = y) for all x

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Cost of 5m of cloth is 320 then cost of 3cm 6cm 9cm prices are

Answers

Using the unitary method, the cost of 3 meters, 6 meters, and 9 meters of cloth with a cost of 320 for 5 meters is 192, 384, and 576 respectively

To use the unitary method, we need to find the cost per unit length of the cloth first.

Cost per unit length = Cost of 5m of cloth / Length of cloth = 320 / 5 = 64 per meter

Now, we can use this cost per meter to find the cost of different lengths of cloth

Cost of 3 meters of cloth = 64 x 3 = 192

Cost of 6 meters of cloth = 64 x 6 = 384

Cost of 9 meters of cloth = 64 x 9 = 576

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Un tren en marcha acelera a razón de 12 metros por segundo ¿ Cual seria tu masa si la fuerza aplicada fuera de 10N ?

Answers

If the force and acceleration are in the same direction, the mass of the object would be 0.83 kg.

The mass of the object cannot be determined with the given information. Acceleration is related to force and mass through Newton's Second Law: F = ma. However, in this case, we are given the acceleration and force, but not the mass. To find the mass, we would need either the acceleration and the force, or the force and the mass.

However, if we assume that the force and acceleration are both in the same direction, we can use the formula F = ma to find the mass. Rearranging the formula, we get m = F/a.

Substituting the given values, we get:

m = 10 N / 12 m/s²

m = 0.83 kg

So, if the force and acceleration are in the same direction, the mass of the object would be 0.83 kg.

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Complete Question:

A moving train accelerates at a rate of 12 meters per second. What would your mass be if the applied force were 10N?

14. Matthew had $4.10 in his pocket. He bought 3 notebooks. Now he has $0.35 in his pocket.
Which equation below can be used to find how much each notebook, n, costs?
A. 4.10-3n=0.35
B. 3n-0.35-4.10
C. 4.10 +0.35=3n
D. 3n+4.100.35

Answers

Answer: A

Step-by-step explanation:

Answer : A

There are 3 notebooks, and each notebook is referred to as ‘n’, thus we have 3n. After paying for 3n, the amount Matthew had decreased from $4.10 to $0.35, meaning that $4.10 minus three notebooks (3n) is equal to $0.35. Therefore, A is correct.

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students estimated the length of one minute without reference to a watch or clock, and the times(seconds) are listed below. assume that a simple random sample has been selected. use a 0.01 significance level to test the claim that these times are from a population with a mean equal to 60 seconds. does it appear that students are reasonably good at estimating one minute? 68 81 39 64 40 22 62 61 67 48 64 69 94 91

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The null hypothesis that the population mean is equal to 60 seconds cannot be rejected at a 0.01 significance level based on the available sample data, indicating that the students are reasonably good at estimating one minute.

To test the claim that the population mean is equal to 60 seconds, we can use a one-sample t-test. The null hypothesis is that the population mean is equal to 60 seconds, and the alternative hypothesis is that it is not equal to 60 seconds.

We can first calculate the sample mean and standard deviation:

sample mean (x') = (68 + 81 + 39 + 64 + 40 + 22 + 62 + 61 + 67 + 48 + 64 + 69 + 94 + 91) / 14 = 63.57

sample standard deviation (s) = 20.11

The test statistic can be calculated as:

t = (x' - μ) / (s / √n)

where μ is the hypothesized population mean (60 seconds), n is the sample size (14), and x' and s are the sample mean and standard deviation, respectively.

Substituting the values, we get:

t = (63.57 - 60) / (20.11 / √14) = 1.74

The degrees of freedom for the t-distribution is n - 1 = 13. Using a t-table or calculator, the p-value associated with a two-tailed test with 13 degrees of freedom and t = 1.74 is approximately 0.106.

Since the p-value is greater than the significance level of 0.01, we fail to reject the null hypothesis. Therefore, we do not have enough evidence to suggest that the students are not good at estimating one minute. We can conclude that it is plausible that the population mean is equal to 60 seconds, based on the available sample data.

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what is the condition for the first dark fringe through a single slit of width w?

Answers

The condition for the first dark fringe through a single slit of width w is when the path difference between the light waves at the edges of the slit equals a half wavelength= (λ/2).

This can be expressed mathematically as:
w * sin(θ) = (m + 1/2) * λ, where m = 0 for the first dark fringe, w is the slit width, θ is the angle of the dark fringe from the central maximum, and λ is the wavelength of light.
When light passes through a single slit, it diffracts and creates an interference pattern with alternating bright and dark fringes on a screen. The dark fringes occur when light waves from the edges of the slit interfere destructively, which means their path difference must be an odd multiple of half a wavelength (λ/2).
For the first dark fringe, we set m = 0 in the equation:
w * sin(θ) = (0 + 1/2) * λ
So, the condition for the first dark fringe is:
w * sin(θ) = λ/2

Hence, The condition for the first dark fringe through a single slit of width w is when the path difference between the light waves at the edges of the slit equals a half wavelength (λ/2). This can be represented by the equation w * sin(θ) = λ/2.

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