Students taking an introductory statistics class reported spending an average of $245 on textbooks that semester with a standard deviation of $60. A rough sketch of the histogram looked like: a. 68% of students spend between and b. 95% of students spend between and c. 99.7% of students spend between and (1. Approximately what percentage of the students spent between $165 and $290 on textbooks that semester? e. One student spent $260 on textbooks. What percentage of the students spent less than she did on textbooks that semester? f. 15% of students spend less than on textbooks