The time it takes a mechanic to tune an engine is known to be normally distributed with

Question:

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.
a. Determine the mean and standard error of a sampling for a sample size of 20 tune-ups. Draw a picture of the sampling Calculate the largest sampling error you would expect to make in estimating the population mean with the sample size of 20 tune-ups. Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...