The normal approximation to the t distribution is commonly used:
A)when the sample size is large, greater than 30
B)only when the sample size is large, greater than 100
C)it would never be used
D)only when the central limit could apply
E)none of the above

Question

Quizplus · Accepted Answer

The normal approximation to the t distribution is commonly used when the sample size is large, typically greater than 30, because the t distribution approaches the normal distribution as the sample size increases.

The Normal Approximation to the T Distribution Is Commonly Used