From the mid-1960s to the early 1990s, there was a slow but steady declinein SAT scores. For example, take the Verbal SAT. The average in 1967 wasabout 543; by 1994, the average was down to about 499. However, the SDstayed close to 110. The drop in averages has a large effect on the tails of thedistribution.
(a) Estimate the percentage of students scoring over 700 in 1967.
(b) Estimate the percentage of students scoring over 700 in 1994.