Answer to Question #303074 in Management for Zelenskyy

Question

The top-selling Amar tire is rated 70,000 KMs, which means nothing. In fact, the distance

the tires can run until they wear out is a normally distributed random variable with a mean

of 82,000 KMs and a standard deviation of 6,400 KMs.

What is the probability that a tire wears out before 70,000 KMs?

What is the probability that a tire lasts more than 100,000 KMs?

Answer 1

A

70,000 -82000 = -12000

-12000/6400

= -1.875

B

100,000 - 82000 = 18000

18000/6400

= 2.8125