document.write( "Question 663125: From a large shipment of transistors from a supplier, 1% of the items are known to be defective. If a sample of 200 transistors are selected at random, what is the probability that 4 or more transistors will be defective? \r
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document.write( "The method I tried:
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document.write( "X-B(200,0.01), find P(X>=4)
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document.write( "n=200 np=200(0.01)=2<5\r
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document.write( "Therefore X-P(2)\r
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document.write( "P(X>=4)=1-P(X=3)
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document.write( "Then ??? \n" );
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Algebra.Com's Answer #412628 by stanbon(75887) ![]() You can put this solution on YOUR website! From a large shipment of transistors from a supplier, 1% of the items are known to be defective. If a sample of 200 transistors are selected at random, what is the probability that 4 or more transistors will be defective? \n" ); document.write( "---- \n" ); document.write( "Binomial Problem with n = 200 ; p(defect) = 0.01 \n" ); document.write( "---- \n" ); document.write( "P(x>=4) = 1 - P(0<= x <=3) = 1 - binomcdf(200,0.01,3) = 0.1420 \n" ); document.write( "==================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |