Throughout the first few weeks of new television season, the evening news audience proportions were recorded as ABC- 31%, CBS- 34%, and NBC- 35%. A sample of 600 homes yielded following viewing audience data.
Number of Homes
ABC 150
CBS 200
NBC 250
We want to find out whether or not there has been significant change in number of viewing audience of three networks.
a. Describe the null and alternative hypotheses to be tested.
b. Calculate the expected frequencies.
c. Calculate the test statistic.
d. The null hypothesis is to be tested at 95% confidence. Find out the critical value for this test. What do you conclude?
e. Find out the p-value and perform the test.