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If the probability of a defective bolt is 0.1find ---mean and the standard deviation of defective bolts in a total of 900 bolts?

Updated: 12/10/2022

Wiki User

∙ 12y ago

Best Answer

(i) mean = np = (900)(0.1) =90

(ii) Std Dev = sqrt(npq) = sqrt((900)(0.1)(0.99)) = 9.4393

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∙ 12y ago

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If the probability of a defective bolt is 0.1find ---mean and the standard deviation of defective bolts in a total of 900 bolts?

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