Offering a warranty on the component

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A company that produces an expensive stereo component is considering offering a warranty on the component. Suppose the population of lifetimes of the components is a normal distribution with mean of 84 months and standard deviation of 10 months. If the company wants no more than 15% of the components to wear out before they reach the warranty date, what number of months should be used for the warranty?

Reference no: EM1399797

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