document.write( "Question 295226: This is probability and I just don't get it.\r
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document.write( "A box contains 8 blue cards, 4 yellow and 2 pink. 2 cards are taken at random from the box, one at a time and then put back. Find each probability:\r
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document.write( "1. blue, then pink
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document.write( "2. yellow, then blue
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document.write( "3.yellow, then pink
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document.write( "4. pink, then yellow
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document.write( "5. blue, then yellow
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document.write( "6. pink, then blue
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document.write( "7. both yellow
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document.write( "8. both blue\r
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document.write( "Thanks!!! \n" );
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Algebra.Com's Answer #212835 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! This is probability and I just don't get it. \n" ); document.write( "A box contains 8 blue cards, 4 yellow and 2 pink. 2 cards are taken at random from the box, one at a time and then put back. Find each probability: \n" ); document.write( "---- \n" ); document.write( "Since you are placing the 1st draw results, the probabilites \n" ); document.write( "of the separate draws are independent. (That means the 2nd \n" ); document.write( "draw results don't depend on what happens in the 1st draw.) \n" ); document.write( "-------------------------------- \n" ); document.write( "1. P(blue, then pink) = P(blue)*P(pink) = (8/16)(2/16) = 1/2*1/8 = 1/16 \n" ); document.write( "--------------------- \n" ); document.write( "2. P(yellow, then blue) = P(yellow)*P(blue) = (4/16)(8/16) = (1/4)(1/2) = 1/8 \n" ); document.write( "---------------------------------- \n" ); document.write( "Can you do the rest? \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "==================================== \n" ); document.write( "3.yellow, then pink \n" ); document.write( "4. pink, then yellow \n" ); document.write( "5. blue, then yellow \n" ); document.write( "6. pink, then blue \n" ); document.write( "7. both yellow \n" ); document.write( "8. both blue \n" ); document.write( "==================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "==================================== \n" ); document.write( " |