The following sample data are from a normal population: 10, 9,
12, 14, 13, 11, 6, 5.
a. What is the point estimate of the population mean?
b. What is the point estimate of the population standard
deviation (to 2 decimals)?
c. With 95% confidence, what is the margin of error for the
estimation of the population mean (to 1 decimal)?
d. What is the 95% confidence interval for the population mean
(to 1 decimal)?
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