:7. For the first-year students at a certain law school, the
correlation between LSAT scores and first-year scores was 0.60.
Consider a first-year student whose percentile rank on the LSAT
(among his classmates) was 90%. The best estimate of his
percentile rank on the first year scores is closest to

 a. 10%

 b. 20%

 c. 40%

 d. 80%

 e. 100%

(Assume that the scatter diagram is homoscedastic and football-
shaped, with the distributions of all scores approximately
normal)