Question: Determine the sample size needed to construct a 95% confidence interval to estimate the average GPA for the student population at Wilmington College with a

Determine the sample size needed to construct a 95% confidence interval to estimate the average GPA for the student population at Wilmington College with a margin of error equal to 0.2. Assume the standard deviation of the GPA for the student population is 1.0. Verify your result using PHStat.

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