Standardized tests: In a particular year, the mean score on the ACT test was 27.7 and the standard deviation was 5.7. The mean score on the SAT mathematics test was 547 and the standard deviation was 126. The distributions of both scores were approximately bell-shaped. Round the answers to at least two decimal places. Part 1 of 5 (a) Find the z-score for an ACT score of 21. The z-score for an ACT score of 21 is -1.17 Part: 1 / 5 Part 2 of 5 (b) Find the z-score for a SAT score of 560. The z-score for a SAT score of 560 is X