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# Knowing the results of the 2018 SAT math exam with a mean of 531 and standard deviation of 114, answer the following questions?

a. What percentage of test takers scored lower than 400 on the math SAT?

Your calculation:

b. What percentage scored between 600 and 700 points?

Your calculation:

c. Your score is 725. What is your percentile rank?

Your calculation:

### 1 Answer

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- alexLv 71 month agoFavorite Answer
Use your calculator

a/

P(X<400)=0.1253

b/

P(600<X<700)=0.2034

c/

P(X<725)=0.9556 ≈ 96%

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