Probability distribution Q

2013-03-20 5:22 am

Suppose Mary works form Monday to Friday in a week. It is assumed that the numbers of customers she meets each day are independent.

Q1. What are the expected value and standard deviation of X, where X is the number of customers she meets in a week?

Q2. What is the probability that she meets exactly five customers in a week?

更新1:

謝謝你的提醒,自由自在。 Mary is a clerk. The following is the probability distribution function of the number of customers she meets in a day, Z. x=0,1,2,3,4 P(Z=x)=0,3c,2c,c,c

回答 (1)

用戶9112

2013-03-20 7:15 am

✔ 最佳答案

Please check your question, there is some missing information...

2013-03-19 23:15:56 補充：
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