The following sample data are from a normal population: 9, 7, 11, 14, 12, 10, 5, 4. What is the point estimate of the population mean? What is the point estimate of the population standard deviation? (Round your answer to three decimal places.) With 95% confidence, what is the margin of error for the estimation of the population mean? (Round your answer to one decimal place.) Hint: Notice that the sample size is small, the population distribution is normal, and the population standard deviation is not known. What is the 95% confidence interval for the population mean? (Round your answer to one decimal place.) to

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