to test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturers, the jacobs chemical company obtained the following data on the time (in minutes) needed to mix the material. manufacturer 1 2 3 24 31 19 30 29 18 28 34 22 26 30 21 a. use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. use . compute the values below (to decimals, if necessary). sum of squares, treatment sum of squares, error mean squares, treatment mean squares, error calculate the value of the test statistic (to decimals). the -value is - select your answer - what is your conclusion? - select your answer - b. at the level of significance, use fisher's lsd procedure to test for the equality of the means for manufacturers and . calculate fisher's lsd value (to decimals). what conclusion can you draw after carrying out this test?

The surface area of the cone is 628 in²

A cone is a shape formed by using a set of line segments or the lines which connects a common point, called the apex or vertex.

The area occupied by a three-dimensional object by its outer surface is called the surface area.

The surface area of cone is expressed as;

SA = πr( r+l)

where l is the slant height and r is the radius

SA = 3.14 × 10( 10+ 10)

SA = 31.4 × 20

SA = 628 in².

Therefore the surface area of the cone is 628 in²

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Answer:

73.33%

Step-by-step explanation:

We Know

The first bag contains 6 red marbles, 5 blue marbles, and 4 green marbles.

6 + 5 + 4 = 15 marbles in the first bag.

The second bag contains 3 red marbles, 2 blue marbles, and 4 green marbles.

3 + 2 + 4 = 9 marbles in the second bag.

What is the probability that Eric will select a red marble from each bag?

Let's solve

First bag: (6 ÷ 15) x 100 = 40%

Second bag: (3 ÷ 9) x 100 ≈ 33.33%

40 + 33.33 = 73.33%

So, the probability that Eric will select a red marble from each bag is ≈ 73.33%

In this situation, the teacher could use a hypothesis test for a population means to determine if the computer-based instruction led to a statistically significant improvement in the student's test scores. The population in this case would be the entire class of students, and the mean would represent the average difference in test scores between the pretest and posttest.

The teacher can use a hypothesis test for a population means in the following situation:

1. Determine the population: The teacher's population consists of all the students who participated in the experiment.

2. Calculate the mean pretest score: The teacher will compute the average score of all the students' pretest results.

3. Implement computer-based instruction: The teacher teaches a lesson using a computer program.

4. Conduct a posttest: After the lesson, the teacher administers a posttest to each student.

5. Calculate the mean post-test score: The teacher will compute the average score of all the students' post-test results.

6. Formulate a null hypothesis: The null hypothesis states that there is no significant difference between the pretest and posttest mean scores. In other words, computer-based instruction did not have a significant impact on the students' performance.

7. Conduct a hypothesis test for a population mean: The teacher will use a statistical test, such as a t-test, to compare the pretest and posttest mean scores. This test will determine whether there is a significant difference between the two means that suggests the computer-based instruction had a positive effect on the student's performance.

8. Interpret the results: If the hypothesis test shows a significant difference between the pretest and posttest mean scores, the teacher can conclude that the computer-based instruction likely had a positive impact on the students' learning. Otherwise, the null hypothesis cannot be rejected, and the teacher may need to explore other instructional methods or factors that could have influenced the results.

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Step-by-step explanation:

Area of the large trapezoid :

   height * average of bases

     area = 8 * (6+11)/2 = 68 cm^2

  MINUS the area of the parallelogram   4x3 =12 cm^2

68 - 12 = 56 cm^2 = shaded region

The area of the surface of the trampoline is approximately 147.3 square feet.

1. To calculate the area of a regular octagon, we can use the formula

A = 2 * a * a * (1 + √2), where A is the area, and a is the length of a side.
2. To find the side length (a), we can use the diameter of the trampoline. Since the diameter is 16 feet and it passes through the center of the octagon, we can divide it by 2 to get the apothem (the distance from the center to the midpoint of a side). In this case, the apothem is 8 feet.
3. The apothem forms a 45-45-90 triangle with half of the side and the center of the octagon. We can use the properties of a 45-45-90 triangle to find the side length (a). Since the apothem is the leg of the 45-45-90 triangle and is equal to 8 feet, the other leg (half of the side length) is also 8 feet.
4. The full side length is twice the length of the other leg, so a = 2 * 8 = 16 feet.
5. Now we can use the area formula: A = 2 * 16 * 16 * (1 + √2) ≈ 147.3 square feet.

Hence, Given a regular octagonal trampoline with a diameter of 16 feet, the area of its surface is approximately 147.3 square feet, rounded to the nearest tenth.

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The height of the steeple is approximately 62 feet (rounded to the nearest foot).

Let x be the height of the steeple, and y be the height from the ground to the bottom of the steeple. The distance from the observer to the church is 120 feet.

Using the tangent function for angle A:

tan(A) = y / 120

tan(18.2) = y / 120

Solve for y:

y = 120 * tan(18.2) ≈ 40.76 feet

Using the tangent function for angle B:

tan(B) = (y + x) / 120

tan(24.4) = (40.76 + x) / 120

Solve for x:

x = 120 * tan(24.4) - 40.76 ≈ 61.92 feet

The height of the steeple is approximately 62 feet (rounded to the nearest foot).

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Answer:

20 square units

Step-by-step explanation:

Given

Height ( h ) = 5 inches

Base ( b ) = 8 inches

To find : Area of the triangle

This triangle is a right angled triangle.

Reason

The height is perpendicular ( ⊥ ) to the base.

Formula

Area of right angled triangle = bh/2

Area of this triangle

= (5 x 8)/2

= 40/2

= 20 square units

Answer: Percentage of half board students in college is 60%

Step-by-step explanation:

We know that percentage of desired quantity is:

n% = ( number of desired quantity / total number of quantity ) * 100

n% = ( n / N ) * 100  .......... (i)

where n% = percentage of desired quantity.

N = total number of quantity.

n = number of desired quantity.

Now, as per the question:

Half board students in college = 372

Total students in college = 620

percentage of Half board students in college = (372/620) * 100

n% = (372/620)*100

n% = 60%

Therefore, at 372 half board students in college , percentage of half board students in college is 60%.

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14) The value of the variable x is 220° using the inscribed angle theorem.

15) The value of x and y are 134° and 75° respectively using the opposite angle property of quadrilateral.

Inscribed Angle Theorem states that the angle inscribed in a circle has a measure of half of the central angle which forms the same arc.

14) Using this theorem,

x° = Central angle formed with the 2 points given on the circle

Inscribed angle = 110°

x = 110 × 2 = 220°

15) Here a quadrilateral is inscribed inside the circle.

We know that, opposite angles are supplementary in a quadrilateral.

So, 46° + x° = 180°

x° = 180° - 46° = 134°

Similarly,

y° = 180° - 105° = 75°

Hence the values of x 220° in the first figure  and the values of x and y are 134° and 75° respectively in the second figure.

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The width of the archway at ground level, given the height can be found to be 42.42 meters.

To find the width of the parabolic archway at ground level, the formula is:

y = a ( x - h ) ² + k

The height given is 23 meters and the width is 12 meters so the value of a can be found to be :

23 = a ( 6 - 0 ) ² + 25

23 = a ( 6 ) ² + 25

-2 = 36 a

a = -1 /18

We can then find the width of the archway at ground level:

0 = ( -1 /18 )( x ²) + 25

x ² = 450

x = ± √ 450

The width of the archway at ground level is:

= 2 x √ 450

= 2 x 21. 21

= 42.42 meters

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Using the sine function with the given angle C and hypotenuse, we find that the length of the side x is approximately 16.23 units.

We can use the trigonometric ratios of the right triangle to find the length of the side x. Since we know the angle C and the hypotenuse, we can use the sine function, which relates the opposite side to the hypotenuse

sin(C) = opposite / hypotenuse

sin(37°) = x / 27

Multiplying both sides by 27, we get

x = 27 sin(37°)

Using a calculator, we find that

x ≈ 16.23

Therefore, the length of the side x is approximately 16.23 units.

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The number of cups of paint required to paint a board by Arella will be 60 cups. The conversion is needed for accurate calculation and any unit can be converted to another form.

The dimensions indicate that shape is rectangle. Based on this, the area of rectangle is given by the formula -

Area of rectangle = length × breadth

Since units for dimensions and area are not same, we need to perform unit conversion. We can either convert each dimension or area into other unit.

Area = 2× 3

Area = 6 m²

Converting in cm² according to 1 metre = 100 cm

Area = 6 (100)²

Area = 6×10⁴ cm²

1000 cm² will be covered by number of cups = 1

6×10⁴ cm² will be covered by number of cups = (6×10⁴)/1000

Number of cups = 60

Hence, 60 cups of paint will be required. Conversion is required for correct calculation. Any unit can be changed into another form.

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The requried probability that Lorenzo chooses one cat sticker and one dog sticker is 5/18.

Here is a tree diagram to represent the situation:

                     Cat (5/9)        Dog (4/8) = 5/36

Lorenzo       Cat (5/9)        Cat (4/8) = 5/3

                     Dog (4/9)         Cat (5/8) = 5/36

                     Dog (4/9)         Cat(4/8) = 4/36 = 1/9

The branches from the first level represent Lorenzo's first pick, either a cat sticker or a dog sticker. The branches from the second level represent Lorenzo's second pick, which is independent of the first pick.

The probability of choosing one cat sticker and one dog sticker is the sum of the probabilities of the two branches that lead to this outcome, which is:

5/36 + 5/36 = 10/36 = 5/18

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Answer:

67.5

Step-by-step explanation:

The perimeter of the resulting rectangle is 67.5 ft

What is the perimeter of the resulting rectangle?

Given that

Perimeter = 45 ft

Scale factor = 1.5

So, we have

Resulting perimeter = 45 * 1.5

Evaluate

Resulting perimeter = 67.5

What is the area of this figure?

The area is the sum of the individual areas

The figure can be divided into two trapezoids

Using the above and the area formulas as a guide, we have the following:

Area = 1/2 * (3 + 5) * 2 + 1/2 * (3 + 7) * 4

Evaluate

Area = 28

Hence, the area is 28 sq units

Answer:

Lunch Box A = 281.25 [tex]in^{3}[/tex]

Lunch Box B = 285 [tex]in^{3}[/tex]

Hope this helps!

Step-by-step explanation:

Volume of a rectangular prism is Length × Width × Height

You choose which one you think is bigger...

Lunch Box A has a volume of 3.75 × 7.5 × 10 = 281.25 [tex]in^{3}[/tex]

Lunch Box B has a volume of 3.75 × 8 × 9.5 = 285 [tex]in^{3}[/tex]

Lunch Box B has a greater volume than Lunch Box A.

Answer:

A) 281.25

B) 285

Step-by-step explanation:

A) 7.5 x 3.75 x 10

28.125 x 10 = 281.25

281.25 in

B) 8 x 3.75 x 9.5

30 x 9.5 = 285

285

A) 281.25 < B) 285

The correct equation which satisfies the values in the table is,

⇒ y = 0.5x + 3

We have to given that;

To find the correct equation of the table.

Now, Let two points on the table are,

⇒ (1, 3.5) and (2, 4)

Hence, Slope of the line is,

m = (y₂ - y₁) / (x₂ - x₁)

m = (4 - 3.5) / (2 - 1)

m = 0.5 / 1

m = 0.5

Thus, The equation of line with slope 0.5 is,

⇒ y - 3.5 = 0.5 (x - 1)

⇒ y - 3.5 = 0.5x - 0.5

⇒ y = 0.5x + 3

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Answer:

A- x - y = z

Step-by-step explanation:

A = x + y + z

- x

A - x = y + z

- y

A- x - y = z

The possible combination is 6552.

For each of the 4 numbers in the combination, there are 9 digits to pick from, making the following total number of possibilities entirely possible:

9 x 9 x 9 x 9 = 6561

The number of possibilities with identical values for all four digits must be subtracted, nevertheless.

There is only one combination for each of the nine possible ways to select the digit that will occur four times (1, 2, 3, 4, 5, 6, 7, 8, or 9).

Therefore, the total number of possible combinations with the given restriction is:

6561 - 9 = 6552.

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There are 40,320 different orders in which the 6 country music bands and 2 rock bands can play at the all-day festival.

If the content loaded Six country music bands and 2 rock bands are signed up to perform at an all-day festival, there are a total of 8 bands. The number of different orders in which they can play can be calculated using the formula for permutations, which is n!/(n-r)!, where n is the total number of items and r is the number of items selected at a time. In this case, all 8 bands will be playing, so r = n = 8. Thus, the number of different orders in which the bands can play is:

8!/(8-8)! = 8!/(0!) = 8! = 40,320

Therefore, there are 40,320 different orders in which the 6 country music bands and 2 rock bands can play at the all-day festival.

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A good price for a 60-ounce bag of popcorn would be $9.00.

We have,

To determine a good price for a 60-ounce bag of popcorn, we can use the unit price of the 30-ounce bag, which is $4.50.

First, we can calculate the unit price of the 30-ounce bag:

Unit price = Price ÷ Quantity = $4.50 ÷ 30 = $0.15 per ounce

Then, we can use this unit price to determine the price of a 60-ounce bag:

Price of 60-ounce bag = 60 × $0.15 = $9.00

Therefore,

A good price for a 60-ounce bag of popcorn would be $9.00.

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The equation of the function represented by the graph is y = -f(x + 3)

From the question, we have the following parameters that can be used in our computation:

f(x) = √x

The graph is first reflected across the y-axis

So, we have

f'(x) = -√x

Next, it is shifted to the right by 3 units

So we have

f''(x) = -√(x + 3)

This means that

y = -f(x + 3)

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Answer:

Step-by-step explanation:

Each of the 25 students received 3,200 grams of clay after the ceramics teacher divided the 80 kg of clay evenly among them.

The problem states that a ceramics teacher bought 80 kg of clay and divided it evenly among 25 students. To find out how many grams of clay each student received, we first need to convert the total amount of clay from kilograms to grams, since we want the answer in grams.

We know that 1 kilogram is equal to 1000 grams, so to convert 80 kg to grams, we can multiply 80 by 1000

80 kg = 80 x 1000 grams = 80,000 grams

Next, we can divide the total amount of clay by the number of students to find the amount of clay per student

= 80,000 grams ÷ 25 students

Divide the numbers

= 3,200 grams/student

Therefore, each student received 3,200 grams of clay.

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The probability of exactly four successes in six trials of a binomial experiment is given by P ( A ) = 9.2 %

Given data ,

The formula for Binomial Distribution is given by

P ( x ) = [ n! / ( n - x )! x! ] pˣqⁿ⁻ˣ

In this case, we want to find P(X=4), the probability of exactly four successes in six trials

On simplifying , we get

n = 6

k = 4

p = 0.40

P(X=4) = C(6, 4) x 0.40⁴ * (1-0.40)⁽⁶⁻⁴⁾

P(X=4) = 15 x 0.40⁴ x 0.60²

P(X=4) ≈ 9.2 %

In a binomial experiment with six trials and a success rate of 40%, the probability of exactly four successes, rounded to the closest tenth of a percent, is roughly 9.2%.

Hence , the probability is 9.2 %

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Answer: 13.82%

Step-by-Step Explanation:  

The base five representation of 2414₆ is 43234₅.

Base five representation is a way of representing numbers using only the digits 0, 1, 2, 3, and 4. This system is also known as quinary or pentimal.

To convert the number 2414₆ to base five, we need to first convert it to base 10 and then convert the result to base five.

To convert 2414₆ to base 10, we can use the formula

2 × 6³ + 4 × 6² + 1 × 6¹ + 4 × 6⁰ = 432 + 144 + 6 + 4 = 586₁₀

Now we can convert 586₁₀ to base five using the following steps

586 ÷ 5 = 117 remainder 1

117 ÷ 5 = 23 remainder 2

23 ÷ 5 = 4 remainder 3

4 ÷ 5 = 0 remainder 4

2414₆ = 43234₅.

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The radius and the surface area of the sphere are 5.88m and 434. 265m²

The formula for calculating the volume of sphere is represented as;

V = 4/3 πr³

Given that the parameters are;

From the information given, we have that;

850 = 4/3 × 3.14 × r³

Multiply the values

850 = 12.56/3 r³

850 = 4.19r³

Divide both sides by the coefficient

r³ = 202. 86

Find the cube root

r = 5. 88m

Surface area = 4πr²

Substitute the values

Surface area = 4 × 3.14 × 5.88²

Surface area = 434. 25cm²

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Answer: 27 out of 65%