Question

Do students who register for early morning classes typically do better than those who sign up for later day classes? Random samples from two elementary statistics classes were taken to determine if a significant difference exists in the variability and means of grades for a probability test given to both classes.
a. Are the assumptions of normality satisfied? Explain.
b. Is there sufficient evidence to reject the hypothesis of equal variances of grades for these two classes? Use a = 0.05
c. Is there sufficient evidence to reject the hypothesis that there is no difference between the mean probability test grades for these two classes? Use a = 0.05


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  • CreatedAugust 28, 2015
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