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.
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