As Long as Your Sample Is Large Enough, You Don't

Multiple Choice

As long as your sample is large enough, you don't have to worry about using the sample standard deviation in place of the unknown population standard deviation in constructing a confidence interval because ________.

A) for low degrees of freedom, the t-distribution is similar to the standard normal distribution
B) for all degrees of freedom, the t-distribution is bell-shaped
C) for a large sample, the t-distribution is similar to the standard normal distribution
D) the sample standard deviation is an efficient estimator of the population standard deviation