Provide an appropriate response.
-The mean SAT verbal score is 486, with a standard deviation of 95. Use the Empirical Rule to determine what percent of the scores lie between 391 and 486. (Assume the data set has a bell-shaped distribution.)
A)34%
B)68%
C)49.9%
D)47.5%

Question

Quizplus · Accepted Answer

34%The Empirical Rule states that for a bell-shaped distribution, approximately 34% of the data lies within one standard deviation below the mean. Since 486 is the mean and 391 is one standard deviation below the mean (486 - 95 = 391), 34% of the scores lie between 391 and 486.

Provide an Appropriate Response