1. A credit card company decides to study the frequency with which its cardholders charge for items from a certain chain of retail stores. The data values collected in the study appear to be normally distributed with a mean of 25 charged purchases and a standard deviation of 2 charged purchases. Out of the total number of cardholders, about how many would you expect are charging 27 or more purchases in this study?

A. 15.9% B. 68.3% C. 94.8% D. 47.8%

2. You take a random sample of n = 900 observations from a population with a mean of 100 and a standard deviation of 10. What's the smallest value of x you would expect to find?

A. 100 B. 96 C. 101 D. 99