document.write( "Question 1124561: Factories A and B produce all of the computers sold at Cheapo Discount Stores. Factory A produces 4 times as many computers as factory B. The probability that a computer produced by factory A is defective is 0.3 and the probability that one produced by factory B is defective is 0.2. \r
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\n" ); document.write( "\n" ); document.write( "If a Cheapo computer is selected at random and it is found to be defective, what is the probability it came from factory A?
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\n" ); document.write( "\n" ); document.write( "If a Cheapo computer is selected at random and it is found not to be defective, what is the probability it came from factory B?
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\n" ); document.write( "\n" ); document.write( "Enter your answers as whole numbers or fractions in lowest terms.
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Algebra.Com's Answer #740868 by Boreal(15235)\"\" \"About 
You can put this solution on YOUR website!
Look at 1000 computers, 800 in Factory A and 200 in Factory B.\r
\n" ); document.write( "\n" ); document.write( "===A==========B=====Total
\n" ); document.write( "G--560-----------160------720
\n" ); document.write( "B--240------------40------280
\n" ); document.write( "T---800-----------200----1000\r
\n" ); document.write( "\n" ); document.write( "280 are defective, 240/280 probability it came from A or 6/7 or 86%\r
\n" ); document.write( "\n" ); document.write( "720 not defective 160/720 probability it came from B or 2/9 or 22%
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