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# Suppose that among gifted seventh-graders who score very high on a mathematics exam

ISBN: 9780321923271 41

## Solution for problem 5.7-2 Chapter 5.7

Probability and Statistical Inference | 9th Edition

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Problem 5.7-2

Suppose that among gifted seventh-graders who score very high on a mathematics exam, approximately 20% are left-handed or ambidextrous. Let X equal the number of left-handed or ambidextrous students among a random sample of n = 25 gifted seventh-graders. Find P(2 < X < 9) (a) Using Table II in Appendix B. (b) Approximately, using the central limit theorem.

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