概率论一道题,求教Do you have a rare disease?Suppose that 1 in 633 people have a particular disease.You go to the doctor and they suggest that you be tested for the disease.The test will accurately give a positive test result with probability
来源:学生作业学帮网 编辑:学帮网 时间:2024/06/04 08:10:32
概率论一道题,求教
Do you have a rare disease?Suppose that 1 in 633 people have a particular disease.You go to the doctor and they suggest that you be tested for the disease.The test will accurately give a positive test result with probability 0.94,and will accurately give a negative test result with probability 0.81.If the test comes back positive,what is the probability you have the disease?
A1表示患病,A2表示无病 ,B表示检查阳性
根据贝叶斯公式和全概公式,所求条件概率P(A1|B)=P(B|A1)P(A1)/[P(B|A1)P(A1)+P(B|A2)P(A2)]=(1/633 *0.94)/(1/633* 0.94 + 632/633 *0.19) =47/605 约为0.0078(由于无病误诊为阳性的概率0.19太高导致结果极不可信)
求教一道概率论和数理统计的题
概率论一道题,求教Do you have a rare disease?Suppose that 1 in 633 people have a particular disease.You go to the doctor and they suggest that you be tested for the disease.The test will accurately give a positive test result with probability
一道概率论简单题目求教
概率论的一道题
概率论一道证明题
概率论一道题
概率论一道题
概率论一道题
求教几题《概率论与数理统计》 ,
求教一道概率论问题我主要是不太懂分布律的问题,求教,
一道概率论的简单题
概率论里的一道题
求解一道概率论,19题
概率论的一道题,谁会
求解一道概率论的题
求一道概率论的题,
求解一道概率论的题,
【概率论】的一道填空题