A weighted average of the value of a random variable, where the probability function provides weights is known as
A weighted average of the value of a random variable, where the probability function provides weights is known as
A.a probability function
B. a random variable
C.the expected value
D.random function
正确答案:the expected value
Tag:
时间:2022-05-24 20:15:31
- 上一篇:A sample of 400 observations will be taken from an infinite population. The population proportion equals 0.8. The probability that the sample proportion will be greater than 0.83 is
- 下一篇:The student body of a large university consists of 60% female students. A random sample of 8 students is selected. What is the probability that among the students in the sample exactly two are female?