Question

A health inspector was interested in determining if the noise levels of hospital

                  corridors in an urban area is greater than 59 decibels. To test this, the noise levels at

                  84 randomly chosen hospitals from the urban area were measured in decibels. The

                 sample mean noise level was 61.2 decibels, and the population standard deviation is

                  7.9 decibels. Use the five step method to test the inspectors claim using α = .025.

Answer 1

To Test :-

H0 :-

H1 :-  

Test Statistic :-


Z = 2.5523   2.55

Test Criteria :-
Reject null hypothesis if


Result :- Reject null hypothesis

There is sufficient evidence to support the claim that the noise levels of hospital corridors in an urban area is greater than 59 decibels.