Provide the notation of the sampling distribution of xbar when simple random samples of size 60 are used.

What happens to the sampling distribution of xbar if simple random samples of size 120 are used?

What general statement can you make about what happens to the sampling distribution of xbar as the sample size is increased? Does this generalization seem logical? Explain.

What is the probability that xbar is within $500 of the population mean if a sample of size 60 is used?

What is the probability that xbar is within $500 of the population mean if a sample of size 1200 is used?