III MULTIPLE CHOICE QUESTIONS i As the sample size n increas

III. MULTIPLE CHOICE QUESTIONS i. As the sample size n increases, all other things being equal, the width of a confidence interval for the population mean tends to: a. increase. b. decrease. c. stay the same. d. increase sometimes and decrease sometimes depending on the value of the population mean.

Solution

b. decrease. because standard error deacreases with increase in sample size.