document.write( "Question 931620: BINOMIAL DISTRIBUTION
\n" );
document.write( "Last Question.
\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) \n" );
document.write( "
Algebra.Com's Answer #565665 by ewatrrr(24785)![]() ![]() You can put this solution on YOUR website! p(stolen) = .20, n = 4 \n" ); document.write( "p(not stolen) = .80 \n" ); document.write( "...... \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% \n" ); document.write( "...... \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) \n" ); document.write( " |