document.write( "Question 931620: BINOMIAL DISTRIBUTION
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\n" ); document.write( "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
\n" ); document.write( "\n" ); document.write( "a) E(x) b) P(X=0) c) P(x=2)
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Algebra.Com's Answer #565665 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
p(stolen) = .20, n = 4
\n" ); document.write( "p(not stolen) = .80
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\n" ); document.write( "E(x) = .2(4) = .8
\n" ); document.write( "P(x = 0) = .8^4
\n" ); document.write( "P(x = 2) = 4C2(.2^2)(.8)^2 0r binompdf(4, .2, 2) = .1536 0r 15.36%
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\n" ); document.write( "Re TY
\n" ); document.write( "to find .1536
\n" ); document.write( "either calculate: 4C2(.2^2)(.8)^2
\n" ); document.write( "Or Use a TI calculator 0r similarly a Casio fx-115 ES plus for:
\n" ); document.write( "binompdf(4, .2, 2)
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