Question:

Assume that a set of test scores is normally distributed

Last updated: 7/11/2022

Assume that a set of test scores is normally distributed

Assume that a set of test scores is normally distributed with a mean of 80 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities. a. The percentage of scores less than 80 is%. (Round to one decimal place as needed.)