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標題:
math probability independent?
發問:
Suppose P(A)= 0.2 P(B)= 0.6 and P(not A n not B) = 0.22. Are event A and event B independent?
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最佳解答:
P(A) = 0.2 P(not A) = 1 - P(A) = 0.8 P(B) = 0.6 P(not B) = 1 - P(B) = 0.4 P(not A n not B) = 0.22 But P(not A) X P(not B) = 0.8 X 0.4 = 0.32 =/= 0.22 So, A and B are not independent.
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