A simple random sample of size 3 has produced sample values 120, 130, and 140. Assume the

Question:

A simple random sample of size 3 has produced sample values 120, 130, and 140. Assume the population of values is normal.
a. Compute the sample average, x, and the sample standard deviation, s.
b. Show the 95% confidence interval estimate of the population mean. Distribution
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