<PRE><B>Question 579923</B>
A company maucfactures batteries in batches of 14 and there is 3 percent risk of defects. find the mean and standard deviation for the random variable x and the number of defects per batch 
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mean = np = 14*0.03 = 0.42
std = sqrt(npq) = sqrt(0.42*0.97) = 0.6383
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# of defects per batch = mean = 0.42
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Cheers,
Stan H.

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