Confidence intervals are computed from a random sample and therefore they are also random. The long run behavior of a 95% confidence interval is such that we’d expect 95% of the confidence intervals ...

Note that population parameter symbols are generally Greek letters. An Industry Example of a Statistic The company’s statistician did some analysis and descriptive statistics of company sample ...

In this module you will learn how to estimate parameters from a large population based only on information from a small sample. You will learn about desirable properties that can be used to help you ...