第一章 2.(1)P(恰有一件次品C=0.0855 3.(2)P{全是正品}=194=0.9122

Choose the missing words from the box. The first one is done for you as an example. memorandum courier pencil reference clear registered enclose zip code post code p.p. acknowledge printer stationery word-processed

NON-LIQUIDATING DISTRIBUTIONS (1 of 2) Nn- liquidating distributions in general Computing current&p Current vs. accumulated&p Non- liquidating property distributions Constructive dividends

一、两个事件的独立性 定义若两事件A,B满足(AB)=P(A)P(B) (1)则称A,B独立,或称A,B相互独立注:当P(A)>0,P(B)>0时,A,B相互独立与A,B互不相容不能同时成立.但与S既相互独立又互不相容(自证)定理1设A,B是两事件,且P(A)>0,若AB相互独立,则(AB)=P(A).反之亦然定理2设事件A,B相互独立则下列各对事件也相互独立:A与B,A与B,A与B

一、填空题(满分15分) 1.已知P(B)=0.3,P(AB)=0.7,且A与B相互独立,则P(A)= 学 2.设随机变量X服从参数为的泊松分布,且P{X=0}=,则= 号: 3.设X~N(2,2),且P(2