write as a single power of 7
​

Step-by-step explanation:

The question requires us to state the null hypothesis only.

A null hypothesis can be used in statistics or experimental research to show that there is no difference in existence between the populations that were specified for the study. An alternative hypothesis is the opposite as it proposes the existence of a difference.

Here is the null hypothesis:-

H0: there are no differences existing between the mean sales of coca-cola classic, coke and pepsi in public vending machine.

Answer:

Move 5 decimal places to the right. 231,000. If it was 10^-5, you would have to move 5 decimal places to the left.

Answer:

In the explanation. :)

Step-by-step explanation:

608000

Answer:

[tex]d=5[/tex]

Step-by-step explanation:

Distance Formula: [tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

Simply plug in the 2 coordinates into the distance formula to find distance d:

[tex]d=\sqrt{(3-(-1))^2+(4-1)^2}[/tex]

[tex]d=\sqrt{(3+1)^2+(3)^2}[/tex]

[tex]d=\sqrt{(4)^2+9}[/tex]

[tex]d=\sqrt{16+9}[/tex]

[tex]d=\sqrt{25}[/tex]

[tex]d=5[/tex]

Answer:

P = 4x - 2

Step-by-step explanation:

Perimeter is all the side lengths added together.

Step 1: Set up expression

P = 2x - 5 + 5 - x + 3x - 2

Step 2: Combine like terms

P = 4x - 2

1.) The probability that the sample mean will be greater than 48 minutes is 0.9332.

2.) The probability of the sample mean being between 44 and 49 minutes is 0.6687.

3.) The z-score of 10 indicates that the sample mean of 65 minutes is 10 standard deviations above the population mean.

To solve this problem, we can use the Central Limit Theorem (CLT), which states that the distribution of sample means tends to be approximately normally distributed, regardless of the shape of the original population, when the sample size is large enough.

1.) Probability of sample mean > 48 minutes:

To calculate this probability, we need to standardize the sample mean using the formula: z = (x - μ) / (σ / √n), where x is the sample mean, μ is the population mean, σ is the population standard deviation, and n is the sample size.

In this case, the population mean (μ) is 45 minutes, the population standard deviation (σ) is 12 minutes, and the sample size (n) is 36. We want to find the probability of the sample mean being greater than 48 minutes.

Calculating the z-score:

z = (48 - 45) / (12 / √36) = 3 / 2 = 1.5

Using a standard normal distribution table or calculator, we find that the probability corresponding to a z-score of 1.5 is approximately 0.9332. Therefore, the probability that the sample mean will be greater than 48 minutes is approximately 0.9332.

2.) Probability of sample mean between 44 and 49 minutes:

To calculate this probability, we need to find the z-scores for both 44 and 49 minutes and then calculate the area between those z-scores.

Calculating the z-scores:

For 44 minutes:

z1 = (44 - 45) / (12 / √36) = -1 / 2 = -0.5

For 49 minutes:

z2 = (49 - 45) / (12 / √36) = 4 / 2 = 2

Using the standard normal distribution table or calculator, we find the probabilities corresponding to z1 and z2:

P(z < -0.5) ≈ 0.3085

P(z < 2) ≈ 0.9772

The probability of the sample mean being between 44 and 49 minutes is approximately P(-0.5 < z < 2) = P(z < 2) - P(z < -0.5) ≈ 0.9772 - 0.3085 = 0.6687.

3.)Conclusion from 100 samples with a mean of 65 minutes:

If 100 samples were collected, and the sample mean was 65 minutes, we would need to assess whether this value is significantly different from the population mean of 45 minutes.

To make this assessment, we can calculate the z-score for the sample mean of 65 minutes:

z = (65 - 45) / (12 / √36) = 20 / 2 = 10

The z-score of 10 indicates that the sample mean of 65 minutes is 10 standard deviations above the population mean. This is an extremely large deviation, suggesting that the sample mean of 65 minutes is highly unlikely to occur by chance.

Given this, we can conclude that the sample mean of 65 minutes is significantly different from the population mean. It may indicate that there is a systematic difference in the delivery times between the sample and the population, possibly due to factors such as increased demand, traffic, or other external variables

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Answer:

60%

Step-by-step explanation: Apologies if incorrect

Answers:

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Explanation:

Answer: The stem would be 4 and the leaves would be 1 and 6

Step-by-step explanation:

The stem would be the first number so for example in 29 the stem would be 2 and the leaves would be 9. Once you do that to each number and put them in lowest to highest order you now have your stem and leaf plot

Answer:

-13, -12, -11

Step-by-step explanation:

Step 1: Define

1st consecutive integer - x

2nd consecutive integer - x + 1

3rd consecutive integer - x + 2

Step 2: Set up equation

x + x + 1 + x + 2 = -36

Step 3: Solve for x

Step 4: Find other integers

1st consecutive integer = -13

2nd consecutive integer = -13 + 1 = -12

3rd consecutive integer = -13 + 2 = -11

Answer:

a. Online customers buy an average of about five packs compared with walk-in customers, who buy an average of about three packs.

Answer:

,,,,,,,,,,,,,, mmmmm mm m m m

Step-by-step explanation:

 m mm m m m mm m

Answer:

The percentage of computing books is 13.33%.

Step-by-step explanation:

The library consist of books on different subjects:

S = {Business, Healthcare, Computing, Psychology, Law,...}

There are a total of N = 60,000 books in the library.

Business (B) = 14,000

Healthcare (H) = 22,000

Psychology and Law (P&L) = 12,000

Remaining = N - B - H - P&L

                  = 60000 - 14000 - 22000 - 12000

                  = 12000

It is provided that computing books make up two thirds of the remainder.

Compute the number of computing books as follows:

C = 12000 × (2/3) = 8000

Compute the percentage of computing books as follows:

[tex]C\% = \frac{8000}{60000}\times 100=13.33\%[/tex]

Thus, the percentage of computing books is 13.33%.

In mathematics, a sequence is an ordered list of elements, often denoted by brackets or parentheses.

The term "a sequence of length n" refers to a sequence that contains a specific number of elements, where the number of elements is denoted by "n."

When the domain of a function is the set of natural numbers (N), it is called an infinite sequence. An infinite sequence can be thought of as an ordered list that continues indefinitely.

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Answer:

123 crackers

Step-by-step explanation:

If 1/3 of the box contains sesame seed crackers, then, 2/3 of the box contains whole wheat and cheese flavored crackers.

Total number of whole wheat and cheese flavored crackers = 53 + 29 = 82

Let x be the total number of crackers in the box, so we will have the equation

2/3 x= 82

x = 82 ÷ 2/3; we will get

X =82 x 3/2

X = 123 crackers

Answer:

Twenty inches

Twenty times two is forty and forty plus five is forty five add those together and you get sixty five inches

Answer:

30 inches

Step-by-step explanation:

haven't learnt this but from the question the first board is 5 inches more then the second and the both is 65 inches so if the first is 30 the second is 35 its 65. pls correct me if wrong

Answer:

Step-by-step explanation:

7000

Answer:

Step-by-step explanation:

There are 24 10 miles in 240. Each 1/2 inch is 10 miles, so there are 12 inches.

Answer:

Your answer will be 12 inches.

Step-by-step explanation:

1/2 inch = 10 miles

1 inch = 20 miles

240/20= 12

Answer:

F = 160 pounds

B. 160 pounds

Step-by-step explanation:

F = k / l

Where,

F = amount of force needed

l = length of the lever

k = constant of proportionality

F = 240 when l = 24 inch

F = k / l

240 = k / 24

Cross product

240*24 = k

k = 5,760

Find F when l = 36 inch

Recall, k = 5,760

F = k / l

= 5,760 / 36

= 160

F = 160 pounds

The correct answer is B. 160 pounds

The variation is an inverse variation.; so, 160 pounds of force is needed for a 36-inch long lever

Given that F varies inversely as L, the variation is represented as:

[tex]F\ \alpha\ \frac 1L[/tex]

Express as an equation

[tex]F\ =\ \frac kL[/tex] -- where k represents the constant of variation

Make k the subject

[tex]k =FL[/tex]

When F = 240, L = 24.

So, we have:

[tex]k =240 \times 24[/tex]

[tex]k =5760[/tex]

Substitute 5760 for k in [tex]k =FL[/tex]

[tex]5760 = FL[/tex]

When L = 36, we have:

[tex]5760 = 36F[/tex]

Divide both sides by 36

[tex]160 = F[/tex]

Rewrite as:

[tex]F = 160[/tex]

Hence, 160 pounds of force is needed for a 36-inch long lever

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Answer:

C.

Step-by-step explanation:

1. Find the area part of the equation.

Area is base×height, so if we substitute 8 as the base and w as the height, A=8w

2. Find the perimeter of the equation.

Perimeter of a rectangle is 2(base + height), so in this case, it will be

P=2(8 + w), or C.

Answer:

x=9

Step-by-step explanation:

step one pull out the factors

 3x - 27  =   3 • (x - 9)

and step two: Equations which are never true

2.1      Solve :    3   =  0

This equation has no solution.

A a non-zero constant never equals zero.

so x-9=0 and add both sides to 9 and to equal 9

Answer:

I don't understand what your asking

Answer:

You need to add like a  b c d

Step-by-step explanation:

they will not know what to reply if you don't add that  

Answer: false

Step-by-step explanation:

The correct answer is 4

Explanation:

One of the ways to solve this mathematical problem is by using the rule of three because there are three pieces of information and one missing information. Below, I show the process step by step:

1. Consider the information provided and the missing information

6 students =  5 hours

     x           =  3  hours

2. Cross multiply to create a simple equation

5x = 18

3. Solve

x = 18 ÷ 5

x = 3.6

This means 3.6 students are required to plant the garden in 3 hours, and this can be rounded as 4 considering people or students cannot be counted using decimal numbers.

1, 3, 5, 7 , 9 and ect.

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Work Shown:

f(x) = x^2

g(x) = a*f(x) for some constant 'a' since g(x) is a scaled version of f(x).

The value of 'a' vertically stretches f(x) upward if a > 0

If 'a' is negative, then we have a reflection going on as shown in the diagram.

We want (x,y) = (3,-6) to be on the graph of g(x). This means g(3) = -6

If we plugged x = 3 into f(x), we get

f(x) = x^2

f(3) = 3^2

f(3) = 9

So,

g(x) = a*f(x)

g(3) = a*f(3) ... replace x with 3

g(3) = a*9 ... replace f(3) with 9 since f(3) = 9

-6 = a*9 ... replace g(3) with -6 since g(-3) = -6

9a = -6

a = -6/9

a = -2/3

Therefore, this means

g(x) = a*f(x)

g(x) = (-2/3)*f(x)

g(x) = (-2/3)*x^2

Answer:

the answer is C

Step-by-step explanation:

Answer:

Its C !

Hope this helps!

:)

Step-by-step explanation: