1) The students in Mrs. Campbell's probability and statistics class scored an average of an 83 on their unit 1 posttest with a standard deviation of 3 points.
2) In a study of females from 15 - 25 years old, it was found that on average females spend 5 hours a day on their
phones with a standard deviation of 2 hours.
3) of 1,000 people who had lunch at the mall food court, each person spent an average of $8 on lunch with a
standard deviation of $6.