Assume that the average talk time on a particular smart phone is 20 hours and that...

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Assume that the average talk time on a particular smart phone is 20 hours and that...

Assume that the average talk time on a particular smart phone is 20 hours and that this time follows the exponential probability distribution. What is the probability that a randomly selected, similar smart phone will experience less than 15 hours of talk time?

A.

0.4252

B.

0.3184

C.

0.5276

D.

0.2555

math Statistics-And-Probability

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