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The distribution of GPA scores is known to be left-skewed. At a large university, the administration...

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Statistics

The distribution of GPA scores is known to be left-skewed. At alarge university, the administration is interested in learningabout the average GPA score of the undergraduate students. A simplerandom sample of 75 undergraduates results in an average GPA scoreof 2.97. Assume that the distribution of GPA scores of theundergraduates at this university is also left-skewed with astandard deviation of 0.62.

(a) Which of the following statements is true?

A. The sampling distribution is normal.

B. The population distribution is normal.

C. Both the sampling distribution and the populationdistribution are normal.

D. Neither the sampling distribution nor the populationdistribution is normal.

E. Unable to determine with the information provided.

(b) What is the 97% confidence interval for the mean GPA of theundergraduates?

A. (1.625, 4.315)

B. (2.835,3.105)

C. (1.73, 4.70)

D. (2.815, 3.125)

E. (1.804, 4.136)

F. (2.827, 3.113)

G. (2.830, 3.110)

H. None of Above

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Solution Given thatPoint estimate sample mean 297Population    See Answer
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