document.write( "Question 468063: I would highly appreciate assistance from a tutor on how to do these three difficult homework problems that are due tonight. I don't know if I am solving them correctly. Please show me if I am mislead. \r
\n" );
document.write( "\n" );
document.write( "4. (1 point) Suppose in a village 50% of the people farm, 60% of the people fish, and 70% of the people either farm or fish. What is the percentage of people in the village who both farm and fish?\r
\n" );
document.write( "\n" );
document.write( ".5+.6= 1.1 - .7 = .4?\r
\n" );
document.write( "\n" );
document.write( "5. (1 point) Suppose in a village 50% of the people farm, 60% of the people fish, and 70% of the people either farm or fish. If a randomly chosen person farms, what is the probability that this person also fishes?\r
\n" );
document.write( "\n" );
document.write( ".5 x .6= .3?\r
\n" );
document.write( "\n" );
document.write( "6. (1 point) Suppose 48% of a village’s population is male. 30% of the men smoke, 20% of the women smoke. If a randomly chosen person is found to be a smoker, what is the probability that this person is a man? Round answer to two places after the decimal point.\r
\n" );
document.write( "\n" );
document.write( ".48 x .3 = .144= .14? \n" );
document.write( "
Algebra.Com's Answer #321146 by edjones(8007)![]() ![]() You can put this solution on YOUR website! This is very easy once you understand Venn diagrams. \n" ); document.write( "Let x=the intersection of farm and fish: .5-x+.6-x+x=.7 the union of farm and fish. \n" ); document.write( "4)1.1-x=.7 \n" ); document.write( "x=.4 answer \n" ); document.write( "farm DISABLED_event_only= .1 \n" ); document.write( "fish DISABLED_event_only= .2 \n" ); document.write( ". \n" ); document.write( "5).4/.5=.8 \n" ); document.write( ". \n" ); document.write( "6) \n" ); document.write( ".48*.3=.144 male smokers \n" ); document.write( ".52*.2=.104 female smokers \n" ); document.write( "--------------add \n" ); document.write( "======>.248 \n" ); document.write( ". \n" ); document.write( ".144/.248 = .58 probability the this person is a man. \n" ); document.write( ". \n" ); document.write( "Ed \n" ); document.write( " |