Assume That the Average Talk Time on an Apple IPhone

question 105

Multiple Choice

Assume that the average talk time on an Apple iPhone is 20 hours and that this time follows the exponential probability distribution. What is the probability that a randomly selected iPhone will experience less than 15 hours of talk time?

• A)0.4252
• B)0.2555
• C)0.3184
• D)0.5276