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Suppose that in Problem 9 14 the standard deviation is 1 200

Suppose that in Problem 9.14, the standard deviation is 1,200 hours.

a. Repeat (a) through (d) of Problem 9.14, assuming a standard deviation of 1,200 hours.

b. Compare the results of (a) to those of Problem 9.14.

a. Repeat (a) through (d) of Problem 9.14, assuming a standard deviation of 1,200 hours.

b. Compare the results of (a) to those of Problem 9.14.

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