(Answered) In the case of the following problems in all cases of

Statistics

In the case of the following problems in all cases of exponential distribution probability calculation is the 1-e utilized.

A certain make of tire has a mean life expectancy of 50,000 miles (exponentially distributed).

1) What is the probability that a random tire will last less than 30,000 miles?

A. 0.451

B. 0.632

C. 0.600

D. 0.247

2) What is the probability that a random tire will last more than 70,000 miles?

A. 0.714

B. 0.247

C. 0.124

D. 0.753

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