Question: During the first few weeks of the new television season, the evening news

audience proportions were recorded as ABC- 31%, CBS- 34%, and NBC- 35%. A sample of 600 homes yielded the following viewing audience data.

Number of Homes

150

ABC

CBS 200

NBC 250

Determine whether or not there has been a significant change in the number of

viewing audience of the three networks. Support your conclusion with a statistical test. Use a = 0.01.