Calculate the largest sampling error

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The time it takes a mechanic to tune an engine is known to be normally distributed with a mean of 45 minutes and a standard deviation of 14 minutes.

1. Determine the mean and standard error of a sampling distribution for a sample size of 20 tune ups. Draw a picture of the sampling distribution.

2. Calculate the largest sampling error you would expect to make in estimating the population mean with the sample size of 20 tune-ups.

Reference no: EM132939323

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