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The Graduate Record Exam (GRE) has a combined verbal and quantitative mean of 1000 and a standard deviation of 200.

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The Graduate Record Exam (GRE) has a combined
verbal and quantitative mean of 1000 and a standard deviation of 200. Scores range from 200 to 1600 and are approximately normally distributed. For each of the following problems:

(a) Indicate the percentage or score called for by the problem.
(b) Select the appropriate distribution curve (from below) that relates to the problem.

a. What percentage of the persons who take the test score below 800? (not sure)

Type the curve best representing your answer: D

b. Above what score do the top 6.68% of the test-takers score?(not sure how)

Type the curve best representing your answer: A

c. Above what score do 84.13% of the test-takers score? 1200

Type the curve best representing your answer: B

d. What percentage of the persons who take the test score above 1168? (not sure how)

Type the curve best representing your answer: B

e. What percentage of the persons who take the test score below 1200? 84.13%

Type the curve best representing your answer: E

 
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