Question: A)Construct the indicated confidence interval for the population mean mu using the t-distribution c=0.95, x-overbar=12.7, s=2.0, n=9 The 95% confidence interval using a t-distribution is

A)Construct the indicated confidence interval for the population mean mu using the t-distribution

c=0.95, x-overbar=12.7, s=2.0, n=9

The 95% confidence interval using a t-distribution is ( , )

B)A population has a mean mu=84 and a standard deviation sigma=28. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=49.

mu-x=

Sigma-x=

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