Answer:
16%.
Explanation:
In a recent math test:
• The average score = 75
,
• Standard Deviation = 10
To find: The percentage of people who scored an 85 or higher, P(X>85).
First, find the z-score when X=85.
[tex]z-score=\frac{X-\mu}{\sigma}[/tex]
Substitute the given values:
[tex]z=\frac{85-75}{10}=\frac{10}{10}=1[/tex]
The people who scored an 85 or higher are 1 standard deviation away from the mean.
[tex]13.5\%+2.35\%+0.15\%=16\%[/tex]
The percentage of people who scored an 85 or higher is 16%.
