Tires of a particular brand have lifetimes with mean 29,000 miles and standard deviation 3,000 miles. (a)

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Tires of a particular brand have lifetimes with mean 29,000 miles and standard deviation 3,000 miles.

(a) Find a range in which it can be guaranteed that 75% of the lifetimes of tires of this brand lie.

(b) Using the rule of thumb, find a range in which it can be estimated that approximately 95% of the lifetimes of tires of this brand lie.

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Statistics For Business And Economics

ISBN: 9780131815957

4th Edition

Authors: Paul Newbold

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Question Posted: Oct 31, 2024 05:01 AM

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Tires of a particular brand have lifetimes with mean 29,000 miles and standard deviation 3,000 miles. (a)

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Statistics For Business And Economics

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