Two children take different standardized reading tests at their respective schools. I Karen scores a 70 on an exam with a mean of 65 and a standard deviation of 10, for a Z score of .50 I Ashley scores a 24 on a test with a mean of 20 and a standard deviation of 4, with a Z score of 77777 ? a) Compute Ashley's Z score. b) Use the Z scores to determine which student scored better on her respective test. c) What do the zrscores indicate about each child's performance? (What do they measure?)