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IB MAI HL Statistics & Probability Topic 4.3 Probability (id: 7e431cb8a)

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admin 发表于 2024-3-5 22:38:44 | 显示全部楼层 |阅读模式
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]
Mark wants to meet his friend Jeremy aft4r qjs-7 5napde2glf x)mbhp 5 bx- ncdm:2:3lkr School to ask him some questions about their Chemistry homework. On a typical school afternoon, Jeremy either goes to the park for some exercise or goes to the library to complete hisd3 2:fp gh ):lxln5ckmmb-b2x homework.
Jeremy has previously told Mark that he goes to the park two out of every five afternoons each school week.
If Jeremy goes to the park, the probability that Mark will meet Jeremy in the park is 0.2 . If Jeremy goes to the library, the probability that Mark will meet Jeremy in the library is 0.7 .
These scenarios are represented on the tree diagram below.

1. Complete the tree diagram.
2. Find the probability that Mark will meet Jeremy that afternoon.   




参考答案: 0.5±2%


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