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A dishwasher has a mean lifetime of 12 years with an estimated standard deviation of 1.25 years. The lifetime of a dishwasher is normally distributed.
A dishwasher has a mean lifetime of 12 years with an estimated standard deviation of 1.25 years. The lifetime of a dishwasher is normally distributed. Suppose you are a manufacturer and you take a sample of 22 dishwashers that you made. Find the mean of the sampling distribution of the sample mean. Put the numeric value in the first box and the correct units in the second box
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