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Answer questions 7, 15, 17

Answer questions 7, 15, 17

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Answer #1

7. given

n = 500 and p = 0.4

this gives q = 1-p = 0.6

so now,

mean \mu = np = 200 and \sigma = \sqrt{npq} = \sqrt{500*0.4*0.6}=10.95

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