The length of the long distance calls made by the employees of a certain company are...

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The length of the long distance calls made by the employees of a certain company are...

The length of the long distance calls made by the employees of a certain company are normally distributed with a mean 6.3 minutes ans a standard deviation 2.5 minutes. Find the probability the probability that a call will last more than 7 minutes.

a

.6308

b

.3897

c

.1788

d

.6291

math Statistics-And-Probability

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