Statisticians agree that when the sample is small, rather than the z value it is more proper to use the:
A) sample findings alone.
B) multiple samples together.
C) s value.
D) hypothesized z value.
E) t value.

Question

Quizplus · Accepted Answer

When the sample size is small (less than 30), it is more appropriate to use the t-distribution rather than the normal (z-) distribution. Therefore, the best choice is to use the t-value instead of the z-value. The t-value takes into account the small sample size and provides a more accurate interval estimate or test of significance.

Statisticians Agree That When the Sample Is Small, Rather Than