An Article titled Teen Boy Forget whatever it wasappeared in

An Article titled \"Teen Boy Forget whatever it was\"appeared in the Australian newspaper Mercury (aprial 21, 1997). It described a study of axademic performance and attention span and reported that the mean time to distraction for teenage boys working on an independent task was 4 minutes. Although the sample size was not given in the article, suppose that this mean was based on a random sample of 50 teenage Australian boys and that the sample standard deviation was 1.4 minutes. Is there convincing evidence that the average attention span for teenage boys is less than 5 minutes: Test the relevant hypotheses using a= 0.01.

Ho:

H1:

P-Value:

Test Statistic:

Conclusion:

Solution

Ho:mu=5

H1:mu < 5

P-Value< 0.0000

Test Statistic: -5.0508

Conclusion:Reject H0