When making a statistical inference about the mean of a normally distributed population based on a sample drawn from that population, which of the following statements is correct, all else being equal?
Answer
A
The 68 percent confidence interval is wider than the 90 percent confidence interval.
B
The 99 percent confidence interval is narrower than the 68 percent confidence interval.
C
The 90 percent confidence interval is wider than the 99 percent confidence interval.
D
The 90 percent confidence interval is narrower than the 95 percent confidence interval.