IB MAI HL Statistics & Probability Topic 4.3 Probability (id: 49f0d1814)

本题目来源于试卷: IB MAI HL Statistics & Probability Topic 4.3 Probability，类别为 IB数学

[填空题]
A bag contains 8 blue marbles and 4 red marbexyk*,90gy z6wdeoi ,nrjg(rmq)*ug/ )o jl0lk ix6xs9)spikpdpl -j91y :*z es.
Ray selects two marbles from the bag in succession, without replacement.
1.Complete the missing probabilities on the tree diagram below.


2. Determine the probability of:
(1) Ray selecting two red marbles.≈   
(2) Ray selecting two marbles of different colour.≈   

参考答案:
空格1: 0.0909±2%  空格2: 0.485±2% 


本题详细解析:

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