問題詳情
3.(15%) Suppose we choose arbitrarily a point from the square with corners at (2,1), (3,1), (2,2)， and (3,2). The random variable X is the area of the triangle with its corners at (2,1), (3,1), and the chosen point. Compute E[X],
參考答案
答案：A
難度：適中0.484848
統計：A(160),B(93),C(22),D(23),E(0)
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