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2. (20) First-semester GPAs for a random selection of freshmen in a large university are shown below. Estimate the true mean
3. ( 20 ) Full-time Ph.D. students receive an average salary of $12,837 according to the U.S. Department of Education. The de
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Answer #1

(2 solutions Given data, o = 0.62 C = 99% -0.99 x = -0 =0.01 From given GPA date EX Mean (*) 101.5 2.8194 n 36 x = 2.0194 n =la Hypothesis ) Hol M=12837 Hai u > 12837 6 test test statisties, 144451 - 12837 22 11 X-4 olm 1560 ray Z=7.1lo843SS z = 7.11

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