Question 863412
I have decided to hold a barbeque on June 21. If the probability that it will rain that day is 0.28 and the probability that the temperature will be less than 15 degrees is 0.13 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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P(A or B) = P(A) + P(B) - P(A and B)
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P(rain or <15) = 0.28+0.13-0.13 = 0.28
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Therefore: P(rain or <15)' = 1- 0.28 = 0.72
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Cheers,
Stan H.
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