试确定常数C,使P(X=i)=C/(2^i)(i=0,1,2,3,4)成为某个随机变量X的分布律,并求(1)P(X<=2) 25
试确定常数C,使P(X=i)=C/(2^i)(i=0,1,2,3,4)成为某个随机变量X的分布律,并求:(1)P(X<=2);(2)P{1/2<X<5/2}...
试确定常数C,使P(X=i)=C/(2^i)(i=0,1,2,3,4)成为某个随机变量X的分布律,并求:(1)P(X<=2);(2)P{1/2<X<5/2}
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