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fredd [130]
3 years ago
10

A football coach gives half his players a protein bar to eat before each game; the other players do not receive the protein bar.

After a month of games, he analyzes their playing stats. He concludes the protein bar helped improve their performance on the field. How can the coach test the means to be sure the results are not likely to happen by chance?
A.He can rerandomize the results by separating the two groups randomly, then calculate the means and the difference of the means.
B.He can pick players at random and analyze their playing stats without calculating means.
C.He can analyze the two groups by calculating the means and the difference of the means.
D.He can pick the players he wants to analyze based on the best stats.
Mathematics
2 answers:
const2013 [10]3 years ago
5 0
<span>A.He can rerandomize the results by separating the two groups randomly, then calculate the means and the difference of the means. </span>
Nata [24]3 years ago
5 0

Answer:

Step-by-step explanation:

He can rerandomize the results by separating the two groups randomly, then calculate the means and the difference of the means.

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evablogger [386]

#1

2 solutions

  • As there are 2 variables namely x and y.

#2

No solution

  • a1/a2=b1/b2\neqc1/c2

#3

Option A

  • multiply 2 with eq(1) and 1 with eq(2)

#4

Option D

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5 0
2 years ago
What property is this 3+4+6=3+6+4
Rainbow [258]

Answer:

I believe the answer is communitive property

Step-by-step explanation:

8 0
4 years ago
Read 2 more answers
1 + 2k = 5k + 7 I got k=2 don't know if it's the right answer ?
DochEvi [55]
You are close, but it is not the correct answer.

1 + 2k = 5k + 7

First, since we are trying to get the variable by itself, we need to move all things to one side. Let's subtract 1 from each side. 
2k = 5k + 7 - 1

Second, we can now subtract (7 - 1) to get 6. Let's add that into our problem and then subtract 5 from each side, still trying to get the variable by itself.
2k - 5k = 6

Third, subtract (2k - 5k) to get -3k. Hint the negative symbol now. If the problem were switched the other way, it would still be a positive. 
-3k = 6

Fourth, we can now divide each side by -3. This results in a fraction and also getting the variable by itself on one side of the problem. Remember the negative sign in front of the fraction since (-3) carried it.
k = - \frac{6}{3}

Fifth, this is our last step. We need to simplify the fraction. Since out fraction is 6/3, which number multiples by 3 to get the answer of 6? The answer is 2, since (3 × 2 = 6). Don't forget the negative!
k = -2

Answer: \fbox {k = -2}
4 0
4 years ago
The graph of an inverse is the reflection of the graph of the function over the line ___
Zepler [3.9K]
The line is y = x also called the diagonal.
5 0
3 years ago
Read 2 more answers
Find the value of x​
Artyom0805 [142]

Answer:

x=65

Step-by-step explanation:

All triangles angles =180, so you have to add up 56 and 59, to get 115, and then subtract 115 from 180 to find the last angle.

I hope this helps!!!

4 0
3 years ago
Read 2 more answers
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