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统计学中概率的一道题Thefinancedirectorofahardwarewholesalerhasaskedtheaccountanttoringallcustomersfivedaysbeforetheiraccountpaymentsaredue,asameansofreducingthenumberoflatepayments.Asaresultoftimeconstraint
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统计学中概率的一道题
The finance director of a hardwarewholesaler has asked the accountant to ring all customers five days beforetheir account payments are due,as a means of reducing the number of latepayments.As a result of time constraints,however,only 60% of customersreceive such a call from the accountant; 90% of the customers called pay ontime,while only 50% of those not called pay on time.The company has justreceived a payment on time from a customer.What is the probability that theaccountant called this customer?
The finance director of a hardwarewholesaler has asked the accountant to ring all customers five days beforetheir account payments are due,as a means of reducing the number of latepayments.As a result of time constraints,however,only 60% of customersreceive such a call from the accountant; 90% of the customers called pay ontime,while only 50% of those not called pay on time.The company has justreceived a payment on time from a customer.What is the probability that theaccountant called this customer?
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答案和解析
你好这位同学,我们先来分析和理解一下这道题目.假设这个hardware wholesaler公司一共有100位客户.按照题目,其中有60人接到了accountant的电话,40人没有接到.60-接到电话 = 54-按时交费[A] + 6-没有按时交费40-没接到...
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