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. What can we conclude at the .01 level of significance, if computed p-value is 0.12, and employees productivity level has average of 4.8 when music is off? "

		Yes. Employees perform better at work when music playing.
		No. Employees don't perform better at work when music playing.
		Not sufficient information to answer the question.
		None of the above

Answer 1

We want to test that, Do employees perform better at work with music playing.

I.e average productivity level is greater for employees if they work with music playing.

Ho:- average productivity level is Not Greater for employees if they work with music playing than if music is not playing

Vs

Ha:- average productivity level is greater for employees if they work with music playing than they work without music playing.

0.01 level of significance,

The computed p-value is 0.12

We reject Ho if the P-value < level of significance.

Here P-value = 0.12 > level of significance = 0.01

So we fail to reject Ho

we may conclude that data do not provide strong evidence to support the claim that average productivity level is greater for employees if they work with music playing.

Answer:- No. Employees don't perform better at work when music playing.