Question

do employees perform better at work with music playing? the music was turned on during the working hours of a business with 45 employees. their productivity level averaged 5.2. on a different day the music was turned off and there were 40 workers. the workers' productivity level averaged 4.8. what can we conclude at the .01 level, if computed p-value is 0.12? a. yes. employees perform better at work when music playing. b. no. employees don't perform better at work when music playing. c. not sufficient information to answer the question. d. none of the above

Answer 1

The correct answer is option B. No. Employees don't perform better at work when music playing

How did we arrive at this assertion?

Let Group 1 be With music on and Group 2 be With music off

Test: If employees perform better at work with music playing.

`H0: μ1 - μ2 \leq 0H_a: μ1 - μ2 > 0`

Right tail

Decision rule: Reject the null if,
`p-value \leq 0.01`

The p-value = 0.12

Decision: p-value = 0.12 > 0.01

Fail to reject the null.

Therefore, It can then be concluded that we fail to reject the null. As a result, option B. No. Employees don't perform better at work when music playing is the correct answer.

Complete question:

Do employees perform better at work with music playing? The music was turned on during the working hours of a business with 45 employees. Their productivity level averaged 5.2. On a different day the music was turned off and there were 40 workers. The workers' productivity level averaged 4.8.

What can we conclude at the .01 level, if computed p-value is 0.12?

A. Yes. Employees perform better at work when music playing.

B. No. Employees don't perform better at work when music playing.

C. Not sufficient information to answer the question.

D. None of the above.