Improving SAT scores. Refer to the Chance (Winter 2001) study of students who paid a private tutor to help them improve their SAT scores, presented in Exercise 2.101 (p. 74). The table summarizing the changes in both the SAT-Mathematics and SAT-Verbal scores for these students is reproduced here. Assume that both distributions of SAT score changes are approximately normal.
SAT-Math | SAT-Verbal | |
Mean change in score Standard deviation of changes in score | 19 | 7 |
65 | 49 |
a. What is the probability that a student increases his or her score on the SAT-Math test by at least 50 points?
b. What is the probability that a student increases his or her score on the SAT-Verbal test by at least 50 points?
Exercise 2.101
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.