Last Year,KAAA's Share of the 6 P

Essay

Last year,KAAA's share of the 6 p.m.news audience was approximately equal to,but not greater than,25 percent.The station's advertising department believes the current audience share is higher than last year's 25 percent share.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.