# Question

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.

Find the probability that a call

a. Lasts between 5 and 10 minutes.

b. Lasts more than 7 minutes.

c. Lasts less than 4 minutes.

Find the probability that a call

a. Lasts between 5 and 10 minutes.

b. Lasts more than 7 minutes.

c. Lasts less than 4 minutes.

## Answer to relevant Questions

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