a. Compute the 2-standard-deviation interval around the mean. b. Make a statement about the proportion of first-time

Question:

a. Compute the 2-standard-deviation interval around the mean.
b. Make a statement about the proportion of first-time candidates for the CPA exam who have total college credit hours within the interval, part a.
c. For the statement, part b, to be true, what must be known about the shape of the of total semester hours?
For Information: Refer to the Journal of Accounting and Public Policy (Spring 2002) study of 100,000 first-time candidates for the CPA exam, Exercise 2.51 (p. 72). Recall that the mean number of semester hours of college credit taken by the candidates was 141.31 hours. The standard-deviation was reported to be 17.77 hours.
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