The Amount Spent on Textbooks for the Fall Term Was

Multiple Choice

The amount spent on textbooks for the fall term was recorded for a sample of five hundred university students. The mean expenditure was calculated to be $500 and the standard deviation of the expenditures was calculated to be $100. Suppose a randomly selected student reported that their textbook expenditure was $700. Calculate the z-score for this student's textbook expenditure.

A) -2
B) -3
C) +2
D) +3