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The combined SAT scores of students are normall distributed with a mean of 950 and a standard deviation of 200.
a. Nancy Bright's SAT score was 1390. What percentage of students have scores more than Nancy Bright?
b. What percentage of students score between 1100 and 1200?
c. what are the minimum and the mximum values of the middle 87.4% of the scores.
d. there were 165 students who scored above 1432. How many students took the SAT?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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