(Choose 1 answer)
Suppose a 90% confidence interval for a population mean turns out to be (85.45, 100.58). To make more useful inferences from the data, it is desired to reduce the width of the confidence interval. Which of the following will result in a reduced interval width?
A. Increase the sample size.
B. Increase the confidence level.
C. Increase the population mean.
D. Increase the sample mean.
E. None of the other choices is correct
Exit 12
