The following sampledata are from a normal population: 10, 9, 12, 14, 13, 11, 7, 4.
a. What is the pointestimate of the population mean?
b. What is the pointestimate of the population standard deviation (to 2 decimals)?
c. With 95%confidence, what is the margin of error for the estimation of thepopulation mean (to 1 decimal)?
d. What is the 95%confidence interval for the population mean (to 1 decimal)?
( , )
