作者wolf035 (阿荣)
看板Statistics
标题[请益] 请问一题机率
时间Mon May 1 12:26:24 2006
Suppose an airplane has more than half of engines in operation
can fly safety. There are two test planes(2 engine plane and 4 engine
plane each). We know these two airplanes use same engines and the
probability of safety flying of each airplane is equal. What is the
probability of the engine in operation?
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