Susan Has Been on a Bowling Team for 14 Years

Multiple Choice

Susan has been on a bowling team for 14 years. After examining all of her scores over that period of time, she finds that they follow a normal distribution. Her average score is 225, with a standard deviation of 13. If during a typical week Susan bowls 16 games, what is the probability that her average score for the week is between 220 and 228?

A) 0.0618
B) 0.2390
C) 0.7600
D) 0.8212