Question

Scores on a certain test are normally distributed with a mean of 71 and a standard deviation of 10. Find:
the percentage of test scores that are below 69
the percentage of test scores that are between 69 and 78
below 69: 57.9%
between 69 and 78: 42.1%
below 69: 42.1%
between 69 and 78: 75.8%
below 69: 42.1%
between 69 and 78: 33.7%
below 69: 75.8%
between 69 and 78: 57.9%
below 69: 75.8%
between 69 and 78: 24.2%

Answer 1

The correct answers are:
- The percentage of test scores that are below 69: 24.2%
- The percentage of test scores that are between 69 and 78: 57.9%