Last Year, TV Station KAAA Had a Share of the 6

Short Answer

Last year, TV station KAAA had a share of the 6 p.m. news audience approximately equal to, but not greater than, 25 percent. The advertising department for the station believes the current audience share is higher than the 25 percent share they had last year. In an attempt to substantiate this belief, the station surveyed a random sample of 400 viewers of 6 p.m. news and found that 146 watched KAAA. Calculate the appropriate test statistic to test the hypotheses using the critical value rule.