The scores on a psychology exam were normally distributed with a mean of 57 and a standard deviation of 9. 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 is with of the students failed.

Following the general formula,

According to the question, the scores on a psychology exam were normally distributed with a mean of 57 and a standard deviation of 9. A failing grade on the exam was anything 2 or more standard deviations below the mean so,

Also, falling cut-off score is calculated as-

Hence, cutoff for a failing score is with of the students failed.

Learn more about mean and standard deviation here:

link

step-by-step explanation:

use context clues to figure out the meaning of the bolded word:  

the sage gardener knew when she had to water her plants.  

question 8 options:

mint plant

wise

happy

lazy

10 - 75

step-by-step explanation:

there's nothing attached so it's most likely anything in that range.