document.write( "Question 863326: I have decided to hold a barbeque on June 21. If the probability that it will rain that day is 0.21 and the probability that the temperature will be less than 15 degrees is 0.14 and I have decided that I will not have the barbeque if it either rains or is colder than 15 degrees, what is the probaility that the barbeque will go ahead? I also know that in June the probability of the temperature being less than 15 degrees and it also raining is 0.13. Give your answer to 2 decimal places
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Algebra.Com's Answer #520321 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "will not have the barbeque if it either rains or is colder than 15 degrees
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document.write( "P(no BBQ) = P(A or B) = P(A) + P(B) - P(A and B) = .21 + .14 - .13 = .20
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document.write( "P(have BBQ) = 1 - .20 = .80 \n" );
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