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the average writing score is 465 and the average math is 529 points. the st. deviation is 90 on each part of the test. Now suppose 37 test takers are...

the average writing score is 465 and the average math is 529 points. the st. deviation is 90 on each part of the test. Now suppose 37 test takers are selected.

- 85% of the time the sample average writing sample score should be less than what?

please help I'm confused on how to solve this problem.

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