Mathematics, 30.11.2019 06:31 patriciaceaser2980

Anew firestone tire is guaranteed to last for 40,000 miles. the actual mean life of the tires is 47,000 miles with a standard deviation of 4,000 miles.
a) what percent of the tires will last for at least 40,000 miles?
b) what percent of the tires will not last for at least 40,000 miles?
c) what is the probability that a tire will last for more than 50,000 miles?
d) the firestone company wants to advertise how long some of their tires last. they decide to state how long the top 3% of their tires will last. how many miles will the top 3% of their tires last?

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Anew firestone tire is guaranteed to last for 40,000 miles. the actual mean life of the tires is 47,...

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