设随机变量x~b(3,1/2),求x的分布函数 设随机变量X B(3,1/2)求X的分布函数
\u8bbe\u968f\u673a\u53d8\u91cfx~b(3,1/2),\u6c42x\u7684\u5206\u5e03\u51fd\u6570f(x)\uff081\uff09\u56e0\u4e3aF\uff08x\uff09\u8fde\u7eed\uff0c\u6240\u4ee5limx\u21920+F(x)\uff1dF(0)\u6709\uff1a1+B=0\uff0c\u5373\uff1aB=-1\uff082\uff09\u7531\u4e8eF(X)\uff1d1?e?x\uff0c x\u226500 \uff0c x\uff1c0\uff0c\u6545\u6709F\uff08-2\uff09=0\uff0cF\uff081\uff09=1-e-1P\uff08-2\uff1cX\uff1c1\uff09=F\uff081\uff09-F\uff08-2\uff09=1-e-1\uff083\uff09\u7531\u4e8eF(X)\uff1d1?e?x\uff0c x\u226500 \uff0c x\uff1c0\u6545\uff1af\uff08x\uff09=e?x \uff0c x\u226500 \uff0c x\uff1c0E\uff08\u3002
\u4f60\u597d\uff01\u7b54\u6570\u5982\u56fe\uff0c\u5148\u5199\u51fa\u6982\u7387\u8868\u518d\u5199\u51fa\u5206\u5e03\u51fd\u6570\u3002\u7ecf\u6d4e\u6570\u5b66\u56e2\u961f\u5e2e\u4f60\u89e3\u7b54\uff0c\u8bf7\u53ca\u65f6\u91c7\u7eb3\u3002\u8c22\u8c22\uff01
你好!先如图写出概率表,再求出分布函数。经济数学团队帮你解答,请及时采纳。谢谢!
你好!答数如图,先写出概率表再写出分布函数。经济数学团队帮你解答,请及时采纳。谢谢!
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