討論串[理工] [機率]-請問一題
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算題目看到的~題目有點長 請問. A and B are playing a game as follow,First A and B pick their own numbers. uniformly from {1,2,3,4,5} and {1,3,8},respectively.. Assu
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x^2 +y^2 -6x +2y +10 = (x-3)^2 + (y+1)^2. 所以其實這就是兩個gaussian分佈相乘:. 1 (x-3)^2 1 (y+1)^2. f(x,y) =----------- exp(- ----------- ) * ----------- exp(- ---
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請問一題. The joint probability density function of random variables X and Y is. given by. 1 (x^2 +y^2 -6x +2y +10). f(x,y)= --- exp{ _ ------------------
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P(H) = 1/2. r.v.X ~B(n,p). n. f(x) = C (1/2)^x * (1/2)^(n-x). x. E[X] = np = (1/2)*n. Var[X] = np(1-p) =(1/4)*n. E[X^2] = Var[X]+E[X]^2 = (1/4)*n + (1
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Let A denote "the ith coin is selected" event. P(A)=i/(k+1). Let B denote "the jth coin flipped the first n times are all head" event. P(B)=(j/k)^n. L
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