The scores on a psychology exam were normally distributed with a mean of 71 and a standard deviation of 8. A failing grade on the exam was anything 2 or more standard deviations below the mean. What...

The scores on a psychology exam were normally distributed with a mean of

and a standard deviation of

A failing grade on the exam was anything 2 or more standard deviations below the mean. What was the cutoff for a failing​ score? Approximately what percentage of the students​ failed?

The cutoff for a failing score was

​(Simplify your​ answer.)