Question

To use a t procedure, which of the following must be true?

i. The standard deviation of the parent population must be unknown.
ii. The sample size must be small (less than 30).
iii. The parent population must be normally distributed.

a) i only
b) i and iii only
c) iii only
d) ii and iii only
e) i, ii, iii

Answer 1

C. The parent population must be normally distributed

Explanation:

The parent population must follow a normal distribution in order to use a t procedure