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Kelso Motor Parts Produces a Car Battery with a Useful

Question 4

Multiple Choice

Kelso Motor Parts produces a car battery with a useful life that has a normal distribution.Average life is 40,000 miles, with a standard deviation of 1500 miles.What proportion of the batteries will have a useful life of less than 39,000 miles?


A) .2514
B) .1056
C) .2669
D) .1673
E) .2014

Correct Answer:

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