SOLUTION: there are 300 students enrolled in business statistics.historically, exam scores are normally distributed with a standard deviation of 30.9. your instructor randomly selected sampl
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Question 936156: there are 300 students enrolled in business statistics.historically, exam scores are normally distributed with a standard deviation of 30.9. your instructor randomly selected sample of 30 examinations and finds a mean of 74.2. determine a 90% confidence interval for the mean score for all students taking the course ? Answer by ewatrrr(24785) (Show Source):
