In a survey of 500 television viewers with access to cable TV, each was asked whether they agreed with the statement, "Overall, I find the quality of news on cable networks ( such as CNN, FOX, CNBC, and MSNBC) to be better than news on the ABC, CBS, and NBC networks." A total of 248 viewers agreed with the statement. (Note: the survey respondents were contacted vial e-mail on the Internte).
a.Identify the population parameter of interest in the survey
b.Give a point estimate of the population parameter
c.Set up H0 and Ha for testing whether the true percentage of TV viewers who find cable news to be better quality than network news differs from 50%.
d.Conduct the test, part c, using α = .10 Make the appropriate conclusion in the words of the problem.
e.What conditions are required for the inference, part d, to be valid? Do they appear to be satisfied?
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