document.write( "Question 99789: If i drive through 3 sets of traffic lights and the probablity of any one being green is 0.3 and the probability of one not being green is 0.7 how do i find what the probability of all being green and the probability that at least one light will not be green? Also how do i calculate the theoretical probability that all three sets of lights will be green. \n" ); document.write( "
Algebra.Com's Answer #73057 by stanbon(75887)\"\" \"About 
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If i drive through 3 sets of traffic lights and the probablity of any one being green is 0.3 and the probability of one not being green is 0.7
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\n" ); document.write( "how do i find what the probability of all being green?
\n" ); document.write( "= 0.3^3 = 0.027
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\n" ); document.write( "and the probability that at least one light will not be green?
\n" ); document.write( "= 1 - P(all are green) = 1-0.027 = 0.973
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\n" ); document.write( "Also how do i calculate the theoretical probability that all three sets of lights will be green.
\n" ); document.write( "You multiply 0.3*0.3*0.3 to get 0,027
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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