A random sample of 10 students contains the following observations, in hours, for time spent studying in
Question:
A random sample of 10 students contains the following observations, in hours, for time spent studying in the week before final exams:
Assume that the population distribution is normal.
a. Find the sample mean and standard deviation.
b. Test, at the 5% significance level, the null hypothesis that the population mean is 40 hours against the alternative that it is higher.
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Jonas Araujo
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Related Book For 
Statistics For Business And Economics
ISBN: 9781292315034
9th Global Edition
Authors: Paul Newbold, William Carlson, Betty Thorne
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