: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)