Draw a rough sketch

1.      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:

Draw a rough sketch, darkening in the portion of the curve that relates to the answer, and indicate the percentage or score called for by the problem.

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1.      What percentage of the persons who take the test score above 1300?

2.      What percentage score above 800?

3.      What percentage score below 1200?

4.      Above what score do 20% of the test-takers score?

5.      Above what score do 30% of the test-takers score?

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