A dishwasher has a mean lifetime of 10 years with an estimated standard deviation of 2.15 years. The lifetime of a dishw

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A dishwasher has a mean lifetime of 10 years with an estimated standard deviation of 2.15 years. The lifetime of a dishw

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A Dishwasher Has A Mean Lifetime Of 10 Years With An Estimated Standard Deviation Of 2 15 Years The Lifetime Of A Dishw 1
A Dishwasher Has A Mean Lifetime Of 10 Years With An Estimated Standard Deviation Of 2 15 Years The Lifetime Of A Dishw 1 (19.48 KiB) Viewed 13 times
A dishwasher has a mean lifetime of 10 years with an estimated standard deviation of 2.15 years. The lifetime of a dishwasher is normally distributed. Suppose you are a manufacturer and you take a sample of 12 dishwashers that you made. Find the probability that the sample would have a mean lifetime less than 10.25 years? Round to four decimal places.
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