17. a. In 2019, the mean SAT score was 1060 with a standard deviation of 195. In 2019, the mean ACT composite score was 20.8 with a standard deviation of 5.8. The highest possible SAT score is 1600 and the highest ACT score is 36. Which is more unusual, a maximum score of 1600 on the SAT or a maximum score of 36 on the ACT? (Assume both populations are normally distributed).b. Which population, SAT scores or ACT composite scores, has a greater variability? (Use the coefficient of variation.)