= 14. Z Confidence Interval page379 Student GPAS First-semester GPAs for a random selection of freshmen at a large university are shown. Estimate the true mean GPA of the freshman class with 99% confidence. Assume c= 0.62. 1.9 2.8 2.5 3.1 2.0 2.1 3.2 3.0 2.7 2.7 2.8 2.4 2.0 3.8 2.8 3.5 3.0 2.9 2.7 3.2 3 8 4.0 2.7 3.5 2.0 1.9 3.0 3.8 3.9 27 2.2 I.E 2.9 2.1

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