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Find the replacement time

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Reference no: EM132848139

Replacement times for Maytag washer and dryer sets are normally distributed with a mean of 8.8 years and a standard deviation of 1.5 years.

(a) Find the replacement time (in years) that separates the top 15%% from the bottom 85%%.

(b) If the manufacturer wants to provide a warranty time so that only 1%% of the washer and dryer sets will be replaced before the warranty expires, what length of time (in years) would you recommend for the warranty?

Reference no: EM132848139

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