Question

Nielsen Media Research indicates that the mean CNN viewing audience last year was about 600,000 viewers per day. During 40 randomly chosen days during the first half of this year, the daily audience was 612,000 viewers with a sample standard deviation of 65,000 viewers. (a) What hypotheses should the CNN management formulate to test whether the CNN viewing audience has increased this year? (b) Use the critical value approach to test these hypotheses with significance level 0.05.

Answer 1