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

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 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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