离散随机变量和概率分布In a Certain country,40% of registered voters are Democrats,35% are Republicans,and 25% are independents.60% of the Democrats,80% of the Republicans,and 30% of the independents favor increased spending to combat terro

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离散随机变量和概率分布In a Certain country,40% of registered voters are Democrats,35% are Republicans,and 25% are independents.60% of the Democrats,80% of the Republicans,and 30% of the independents favor increased spending to combat terro

离散随机变量和概率分布In a Certain country,40% of registered voters are Democrats,35% are Republicans,and 25% are independents.60% of the Democrats,80% of the Republicans,and 30% of the independents favor increased spending to combat terro
离散随机变量和概率分布
In a Certain country,40% of registered voters are Democrats,35% are Republicans,and 25% are independents.60% of the Democrats,80% of the Republicans,and 30% of the independents favor increased spending to combat terrorism.If a person chosen at random from this country favors increased spending to combat terrorism,what is the probability that the person is a Democrat?在某个国家,40%的登记选民是民主党人,35%是共和党人,25%是独立的.民主党的60%,80%的共和党人和30%的独立,赞成增加开支,以打击恐怖主义.如果随意选择一个人从这个国家有利于增加开支,以打击恐怖主义,该人是民主党的概率是什么?

离散随机变量和概率分布In a Certain country,40% of registered voters are Democrats,35% are Republicans,and 25% are independents.60% of the Democrats,80% of the Republicans,and 30% of the independents favor increased spending to combat terro
假设这个国家总共有一万人口,那么四千是民主党,3500是共和党,2500是独立.4000个民主党中60%支持增加开支,就是2400人支持.3500个民主党中80%支持,就是2800人支持.2500个独立中30%支持,就是750人支持.所以总共支持增加开支的是2400+2800+750=5950人,其中是民主党的概率是2400/5950=40.34%

数学题:1,2,39这9个数中任取3个数.设ε为这3个数中两数相邻的组数,求随机变量ε的概率分布?请加计算过程,谢谢! 这ε的取值为0、1、2

假设这个国家总共有一万人口,那么四千是民主党,3500是共和党,2500是独立。4000个民主党中60%支持增加开支,就是2400人支持。3500个民主党中80%支持,就是2800人支持。2500个独立中30%支持,就是750人支持。所以总共支持增加开支的是2400+2800+750=5950人,其中是民主党的概率是2400/5950=40.34%...

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假设这个国家总共有一万人口,那么四千是民主党,3500是共和党,2500是独立。4000个民主党中60%支持增加开支,就是2400人支持。3500个民主党中80%支持,就是2800人支持。2500个独立中30%支持,就是750人支持。所以总共支持增加开支的是2400+2800+750=5950人,其中是民主党的概率是2400/5950=40.34%

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条件概率的问题。