Use the empirical rule to answer each question.

2011 high school seniors had the following mean and standard deviation on the mathematics
portion of the SAT exam. p = 514 and o = 117.

a. Approximately what percentage of scores were greater than 397 but less than 631?

b. What two scores have approximately 95% of the data between them?

c. Approximately what percentage of high school seniors had mathematics scores in the
second quartile?

d. Describe where the best and worst 0.3% of scores lie.