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The following sample data are from a normal population: 1, 19, 11, 12, 2, 2, 12, 19.

a. What is the point estimate of the population mean? (two decimal places)

b. What is the point estimate of the population standard deviation? (two decimal places)

c. With 95% confidence, what is the margin of error for the estimation of the population mean? (Rounded to one decimal place)

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