Question: A random sample was selected from a population having a normal distribution. Calculate a 90% confidence interval estimate for m for each of the following

A random sample was selected from a population having a normal distribution. Calculate a 90%

confidence interval estimate for m for each of the following situations:

a. x  134, n  10, s  3.1

b. x  3,744, n  120, s  8.2

c. x  40.5, n  9, s  2.9

d. x  585.9, x2  15,472.37, n  27 (Hint: Refer to Equation 3.13)

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