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

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