题目
(复习)加工某一零件共需经过三道工序,设第一、第二、第三道工序的次品率分别是1.5%, 2%, 3.5%,假定各工序是互不影响的，求加工出来零件的次品率。设 A_(i)=第i道工序生产出来的产品为次品,则次品率为()A. P(overline(A_{1)})P(overline(A_{2)})P(overline(A_{3)})B. 1-P(A_(1))P(A_(2))P(A_(3))C. 1-P(overline(A_{1)})P(overline(A_{2)})P(overline(A_{3)})D. P(A_(1))P(A_(2))P(A_(3))
(复习)加工某一零件共需经过三道工序,设第一、第二、第三道工序的次品率分别是1.5%, 2%, 3.5%,假定各工序是互不影响的，求加工出来零件的次品率。设 $A_{i}=\{第i道工序生产出来的产品为次品\}$,则次品率为()
A. $P(\overline{A_{1}})P(\overline{A_{2}})P(\overline{A_{3}})$
B. $1-P(A_{1})P(A_{2})P(A_{3})$
C. $1-P(\overline{A_{1}})P(\overline{A_{2}})P(\overline{A_{3}})$
D. $P(A_{1})P(A_{2})P(A_{3})$
题目解答
答案
C. $1-P(\overline{A_{1}})P(\overline{A_{2}})P(\overline{A_{3}})$