Find the replacement time that separates the top

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Replacement times for Maytag washer and dryer sets are normally distributed with a mean of 9.2 years and a standard deviation of 1.2 years.

Round all final answers to 3 decimals.

(a) Find the replacement time (in years) that separates the top 17% from the bottom 83%.

(b) If the manufacturer wants to provide a warranty time so that only 5% 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: EM132857167

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