Question

The scores on a standardized test are normally distributed with a mean of 115 and standard deviation of 10. What test score is 0.8 standard deviations below the mean?

Answer 1

Given:

The scores on a standardized test are normally distributed with a mean of 115 and standard deviation of 10.

Required:

What test score is 0.8 standard deviations below the mean?

Step-by-step explanation:

`\begin{gathered} \text{ The standard deviation is 10. So, 0.8 standard deviation is } \\ 0.8*10=8.\text{ So, }115-8=107\text{ is the score that is 0.8 standard deviation } \\ \text{ from the mean.} \end{gathered}`

Answer:

answered the question.