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A company that manufactures golf balls produces a new type of ball that is supposed to travel significantly farther than the company’s previous golf ball. To determine this, 40 new-style golf balls and 40 original-style golf balls are randomly selected from the company’s production line on a specific day. The balls are then placed in a bag and shaken. A golf pro then selects a ball and hits it. The distance the ball travels is then measured. The bag is shaken again, and the golf pro selects another ball to hit. She continues this procedure until all 80 of the golf balls are hit.

Has the principle of comparison been addressed in this experimental design?

A Yes, because the balls are randomly selected, the distances of the new ball can be compared to the distances of the original ball.
B Yes, because the original ball type is included in this experiment, the distances the different balls travel can be accurately compared.
C No, because a placebo ball was not used, a comparison cannot be made to determine if the new ball travels significantly farther.
D No, because all of the new type of balls are not hit first, the distances they travel cannot be compared to the distances of the original ball.

Answer:

12. 7

13. 6

Step-by-step explanation:

Answer:   12. x =7           13. x =6

Step-by-step explanation:

Both angles in the triangle has to equal to each other because they are both equivalent.

Set both expressions equal to each other and solve for x.  

12.  5x =  35    Divide both sides by 5

x =  7  

13.     3x =   5x - 12      Subtract 5x from both sides

        -5x       -5x  

   -2x =  -12      Divide both sides by -2

 x = 6

Answer:

1/2k-3/5

Step-by-step explanation:

Answer:

Step-by-step explanation:

2/5 k - 3/5 + 1/10 k

like denominators

4/10 k + 1/10 k - 3/5

5/10k - 3/5

1/2k - 3/5

Answer:

The replica of the Eiffel tower at King’s Island amusement park is 1/3 the height of the original Eiffel tower in Paris, France. The height of the replica measures 350 feet. What is the height of the original Eiffel tower in Paris, France?

Step-by-step explanation:

Answer:

Step-by-step explanation:

D 8(6+4)

Answer:

6.2 is the answer you are looking for

Answer:

x=29

Step-by-step explanation:

5x+30=175 because they are congruent

5x=145

x=29

Answer:

She has 400 megabytes left

Step-by-step explanation:

The requried, we cannot conclude that the mean cyclic time is greater than 3.5 hours for the new process of producing a type of novolac resin based on the given data.

To determine if we can conclude that the mean cyclic time is greater than 3.5 hours for the new process of producing a type of novolac resin, we need to perform a hypothesis test.

We can use a one-sample t-test to test the null hypothesis that the mean cyclic time is equal to 3.5 hours against the alternative hypothesis that the mean cyclic time is greater than 3.5 hours.

Using the given data, we can calculate the sample mean and sample standard deviation of the cyclic times for the six batches produced. The sample mean is:

x = (3.45 + 3.47 + 3.57 + 3.52 + 3.40 + 3.63) / 6
  = 3.50 hours

The sample standard deviation is:

[tex]s = \sqrt ((3.45 - 3.50)^2 + (3.47 - 3.50)^2 + (3.57 - 3.50)^2 + (3.52 - 3.50)^2 + (3.40 - 3.50)^2 + (3.63 - 3.50)^2) / (6 - 1)) }[/tex]
 = 0.086 hours

The test statistic for the one-sample t-test is:
[tex]t = ( \bar x-\mu) / (s / \sqrt(n))[/tex]

where μ is the hypothesized mean cyclic time, n is the sample size, and s is the sample standard deviation.

Substituting the given values, we get:

[tex]t = (3.50 - 3.5) / (0.086 / \sqrt(6))[/tex]
= 0

The degree of freedom for the t-test is n - 1 = 5.

Using a t-table or a calculator, we can find the critical value of t for a one-tailed test with α = 0.05 and 5 degrees of freedom to be 1.833.

Since the calculated t-value of 0 is less than the critical value of 1.833, we fail to reject the null hypothesis. Therefore, we cannot conclude that the mean cyclic time is greater than 3.5 hours based on the given data.

Therefore, we cannot conclude that the mean cyclic time is greater than 3.5 hours for the new process of producing a type of novolac resin based on the given data.

Learn more about the hypothesis here:

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Answer

Step-by-step explanation:

what method matters?

Answer:

46

Step-by-step explanation:

46+ 32= 78

40+30=70

6+2=8

70+8+78

Step-by-step explanation:

(3a-7a+6)-(4a-3a+4)

(-4a+6)-(1a+4)

Add the remaining a's together, as well as the 6 and 4.

you get,

-3a+10

Answer:

a. The mean number of cavities a person gets filled by the age of 50 is 7.1.

b. The medium number of cavities a person gets filled by the age of 50 is 8.

c. The most occuring number of cavities filled in the data set is 8.

Simplify the expression.

18x + 7y/6

Answer:

Step-by-step explanation:

Answer:

f ( 5 ) = 13

Step-by-step explanation:

Step 1:

f ( x ) = 2x + 3         Function

Step 2:

x = 5          Given

Step 3:

f ( 5 ) = 2 ( 5 ) + 3      Input x value

Step 4:

f ( 5 ) = 10 + 3       Multiply

Step 5:

f ( 5 ) = 13       Combine Like Terms

Answer:

f ( 5 ) = 13

Hope This Helps :)

Answer:

f(5) = 13

Step-by-step explanation:

f(x) = 2x + 3

f(x) = 2(5) + 3

f(x) = 13

Answer:

study my ___________ I hope it helps

Answer:

D (-2,6)

x=y-8;5x+y=-4

Step: Solve x=y−8for x:

Step: Substitute y−8 for x in 5x+y=−4:

5x+y=−4

5(y−8)+y=−4

6y−40=−4(Simplify both sides of the equation)

6y−40+40=−4+40(Add 40 to both sides)

6y=36

6y /6 = 36/ 6  (Divide both sides by 6)

y=6

Step: Substitute6foryinx=y−8:

x=y−8

x=6−8

x=−2 (Simplify both sides of the equation)

x=−2 and y=6

I hope this helps:

Answer:

a and b

Step-by-step explanation:

parallel lines are lines that do not intersect each other

Answer:

Remainder is 157

Step-by-step explanation:

-7 | 3 -1    3

____-21_154

     3 -22 | 157

Answer is 3x-22 R157

Answer:

f(4) = 9

Step-by-step explanation:

You just need to substitute 4 in for x.

f(4) = 5(4) - 11

f(4) = 20 - 11

f(4) = 9

Answer: 1/36

Step-by-step explanation: 18 x 18 = 324

3 x 3 = 9

9/324 = 3/108 = 1/36

Answer:

1/36! good luck! :D

Step-by-step explanation:

Answer:

I don't think so

Step-by-step explanation:

if the s has to be more than or equal to then s would have to equal 8 or more

Each bottle holds 1.75 liters of water.

To determine how much water each bottle holds, we can divide the total amount of water by the number of bottles.

Given that 200 bottles hold 350 liters of water, we divide 350 liters by 200 bottles:

350 liters / 200 bottles = 1.75 liters per bottle

Therefore, each bottle holds 1.75 liters of water.Therefore, each bottle holds 1.75 liters of water.

This means that if we were to fill each bottle to its maximum capacity, it would hold 1.75 liters of water.

It's important to note that this assumes each bottle has an equal capacity and that the water is evenly distributed among them.

for such more question on amount

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Answer:

If j=23 and j-5 is how old Jeffery's brother is then Jeffrey's brother is 17 years old.

So j=17

15: 6

hope this helps

Answer:

$8

Step-by-step explanation:

Answer:

$8.00

Step-by-step explanation:

40 x .20 =8

40+8=$48