document.write( "Question 559471: If the probability of defective bolt be 1/10,Find the mean and variance for binomial distribution of defective bolts in a sample of 400 bolts. \n" ); document.write( "

Algebra.Com's Answer #363432 by AnlytcPhil(1806) $\"\"$ $\"About$

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document.write( "mean = (number)×(probability)\r\n" );
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document.write( "mean = 400× = 40\r\n" );
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document.write( "variance = (number)×(probability)×(One minus probability)\r\n" );
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document.write( "variance = (400)×(1/10)×(1-) = (400)×()×(-) = (400)×()×() = 40× =  = 36\r\n" );
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document.write( "Edwin

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