Suppose Nine Items Are Randomly Sampled from a Normally Distributed

Multiple Choice

Suppose nine items are randomly sampled from a normally distributed population with a mean of 100 and a standard deviation of 20. The nine randomly sampled values are: Calculate the probability of getting a sample mean that is smaller than the sample mean for these nine sampled values.

A) 0.1411
B) 0.1612
C) 0.1512
D) 0.2266