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Below you are given ages that were obtained by taking a

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Reference no: EM13584836

Below you are given ages that were obtained by taking a random sample of 9 undergraduate students. Assume the population has a normal distribution.

40   42   43   39   37   39

a. What is the point estimate of m?

b. Determine the standard deviation.

c. Construct a 90% confidence interval for the average age of undergraduate students.

d. Construct a 99% confidence interval for the average age of undergraduate students.

e. Discuss why the 99% and 90% confidence intervals are different.

Reference no: EM13584836

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