In a law school class, the entering students averaged about 160 in the LSAT; the SD was about 8. The histogram of LSAT scores followed the normal curve reasonably well.
(LSAT scores range from 120 to 180, among all test-takers, the average is around 150 and the SD is around 9.)
a. about what percentage of the class scored below 166?
b. one student was 0.5 SDs above the class average on the LSAT. About what percentage of the students in the class had lower scores than he did?

Question

In a law school class, the entering students averaged about 160 in the LSAT; the SD was about 8. The histogram of LSAT scores followed the normal curve reasonably well.
(LSAT scores range from 120 to 180, among all test-takers, the average is around 150 and the SD is around 9.)
a. about what percentage of the class scored below 166?
b. one student was 0.5 SDs above the class average on the LSAT. About what percentage of the students in the class had lower scores than he did?

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