The graduate credit grade point average (CGPA) for students admitted to the business schools was 3.37. Assume this estimate was based on a sample of 120 students admitted to the schools. Using past...

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Extracted text: The graduate credit grade point average (CGPA) for students admitted to the business schools was 3.37. Assume this estimate was based on a sample of 120 students admitted to the schools. Using past years' data, the population standard deviation can be assumed known with o= 28. Calculate 95% confidence interval estimate of the mean graduate CGPA for students admitted to the top graduate business schools using the below table. Confidence Level a a/2 90% 10 .05 1.645 95% .05 .025 1.960 99% .005 2.576