For a normally, distributed data that has a mean of 100 and a standard deviation of 15, approximately, what percentage of scores are between 85 and 130?

Question

For a normally, distributed data that has a mean of 100 and a standard deviation of 15, approximately, what percentage of scores are between 85 and 130?

a. 13.5%

b. 68%

c. 81.5%

d. 34%

Answer 1

c. the rest are too small

by the empirical rule

68/2 + 95/2 = 34 +47.5 = 81.5 percent fall between 85 and 130