Question

1. (11pt) CNN has been the longtime ratings leader of cable television news. Jason Media Research Inc. indicated that the historical mean CNN viewing audience is 8,000,000 viewers on Sunday prime time shows, with a standard deviation of 900,000 viewers. A sample of 100 Sundays of 2016 finds an average of 7,750,000 Sunday prime time viewers. CNN CEO wants to know whether there has been a change in audience behavior during 2016. The hypothesis to be tested for this problem is the following:

H_{0 :} µ = 8,000,000

H_a : µ ≠ 8,000,000

1. (5pt) Conduct hypothesis test using a critical-value approach with 95% level of confidence.

2. (3pt) Conduct a hypothesis test using a p-value approach with 95% confidence.

3. (3pt) According to the statistical analysis you have performed above, what should be the conclusion of CNN    

              management regarding the audience behavior after getting the result from the statistical test?

Answer 1

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