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## Solution for problem 2E Chapter 5.7

Probability and Statistical Inference | 9th Edition

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Problem 2E

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.

REMARK Since X has a skewed distribution, the approximation is not as good as that for the symmetrical distribution where p = 0.50, even though np = 5. Step-by-Step Solution:
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Financial Accounting 2.1 The rules of debit and credit were debit stands right and credit stands left of a chart. In the account there is a record of increases and decreases in asset, liability, equity, revenue, or expense item. The account consists of the title, the left debit side, and the right credit side. It...

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##### ISBN: 9780321923271

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