document.write( "Question 951583: BINOMIAL DISTRIBUTION \r
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document.write( "Last Question.A city law enforcement official has started that 20% of the items sold by pawn shops within the city have been stolen. ralph has just purchase 4 items from one of the city's pawn shops. assuming that the official is correct and fo the X= the number of ralph purchases that have been stolen, determine the following \r
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document.write( "a) E(x) \r
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document.write( "b) P(X=0) \r
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document.write( "c) P(x=2)\r
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document.write( "d) formula and solution\r
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document.write( "Thank you \n" );
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Algebra.Com's Answer #581130 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A city law enforcement official has stated that 20% of the items sold by pawn shops within the city have been stolen. ralph has just purchase 4 items from one of the city's pawn shops. assuming that the official is correct and fo the X= the number of ralph purchases that have been stolen, determine the following \n" ); document.write( "a) E(x) = np = 4*0.2 = 0.8 \n" ); document.write( "----------------------- \n" ); document.write( "b) P(X=0) = 0.8^4 = 0.4096 \n" ); document.write( "----------------------- \n" ); document.write( "c) P(x=2) = 4C2(0.2)^2*(0.8)^2 = binompdf(4,0.02,2) = 0.0023 \n" ); document.write( "------------------------ \n" ); document.write( "d) formula and solution ????? \n" ); document.write( "========== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "========== \n" ); document.write( " \n" ); document.write( " |