First-semester GPAs for a random sample of 30 freshmen at a large university are given in the

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First-semester GPAs for a random sample of 30 freshmen at a large university are given in the attached spreadsheet. Estimate the true mean GPA of the freshmen class with 99% confidence.

A. 2.04 < μ < 3.24

B. 2.66 < μ < 3.04

C. 2.79 < μ < 2.91

D. 2.53 < μ < 3.17

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