The Distribution of Sample Means for Scores on a Test

Multiple Choice

The distribution of sample means for scores on a test for samples of size 100 is normal with a mean of 61.7 and a standard deviation of 1.5. If a sample of 100 test scores is selected at random, what is the probability that the sample mean will be greater than 63.8?

A) 0.9192
B) 0.0668
C) 0.0808
D) 1.4