A single sample with n 25 scores is used to construct a con

A single sample with n = 25 scores is used to construct a confidence interval for the population mean. What would be the difference between a 90% confidence interval and a 95% confidence interval?

a. The 95% interval will be wider and will have larger values for t.

b. The 95% interval will be wider and will have smaller values for t.

c. The 95% interval will be narrower and will have larger values for t.

d. The 95% interval will be narrower and will have smaller values for t.

Solution

d. The 95% interval will be narrower and will have smaller values for t (critical).