When establishing the confidence interval for the average weight of a cereal box,assume that the population standard deviation is known to be 2 ounces,and based on a sample the average weight of a sample of 20 boxes is 16 ounces.The appropriate test statistics to use is ________.
A)t
B)Z
C)$\chi$
D)p

Question

Quizplus · Accepted Answer

The appropriate test statistics to use when the population standard deviation is known is the Z-score. Therefore, the best choice is B.

When Establishing the Confidence Interval for the Average Weight of a Cereal