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Student advisors are interested in determining if the variances of the grades of day students and...

Student advisors are interested in determining if the variances of the grades of day students and night students are the same. The following samples are drawn:

Day

Night

n Day = 12

n Night = 9

s Day = 10.2

s Night = 14.7

Are the variances of the populations equal? Use α = 0.05. (30 points)

a) Formulate the hypotheses. (10 points)

b) Calculate the test statistics (F value) and test the hypotheses. What is the conclusion? (20 points)

Math   Statistics-And-Probability   
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