document.write( "Question 507360: Among students 70% own a car, 50% own a bike and 40% own both.\r
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\n" ); document.write( "\n" ); document.write( "(a) Find a probability that a randomly chosen student own a least one of the above vehicles.\r
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\n" ); document.write( "\n" ); document.write( "(b) What is a probability that a randomly chosen student does not own a bike?
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Algebra.Com's Answer #340442 by stanbon(75887)\"\" \"About 
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Among students 70% own a car, 50% own a bike and 40% own both. \r
\n" ); document.write( "\n" ); document.write( "(a) Find a probability that a randomly chosen student owns at least one of the above vehicles.
\n" ); document.write( "P(car) = 0.7 ; P(bike) = 0.5 ; p(car and bike) = 0.4
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\n" ); document.write( "P(car OR bike) = 0.7 + 0.5 - 0.4 = 0.8
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\n" ); document.write( "\n" ); document.write( "(b) What is a probability that a randomly chosen student does not own a bike?
\n" ); document.write( "P(not bike) = 0.5
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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