Question: Refer to Exercise 8.38. How long do the longest 10% of calls last? The long-distance calls made by the employees of a company are normally

Refer to Exercise 8.38. How long do the longest 10% of calls last?

The long-distance calls made by the employees of a company are normally distributed with a mean of 6.3 minutes and a standard deviation of 2.2 minutes.

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