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
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,这ε的取值为0、1、2

条件概率问题，给定这个人支持增加开支，是民主党的概率是
40*60/（40*60+35*80+25*30）= 0.403