Probability of long distance calls

Reference no: EM13102559

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

Reference no: EM13102559

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