The t-distribution must be used when the sample size is greater than 30 and the variable is normally or approximately normally distributed.

Question

Quizplus · Accepted Answer

The t-distribution can be used when the sample size is small (less than 30) and the variable is normally or approximately normally distributed. When the sample size is greater than 30, the t-distribution approaches the standard normal distribution, and it can be used if the variable is normally or approximately normally distributed.

The T-Distribution Must Be Used When the Sample Size Is