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Nationally, the average number of hours college students contributed to a governor’s election campaign to be...

Nationally, the average number of hours college students contributed to a governor’s election campaign to be no more than 10 hours a week. A random sample of 100 students averaged 8 hours a week with a standard deviation of 3 hours. Test the hypothesis that students in this sample contributed less hours to the campaign than the national college population? Set α=.05 level. What is the estimated standard error of the sampling distribution of means?

A) .358

B) .235

C) .30

D) .47

math   Statistics-And-Probability   
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