So let’s learn how to construct a confidence interval for a population mean using a large sample size. By a large sample size, we are generally referring to *n* ≥ 30. The first step in developing a confidence interval for a population involves the following discussion on estimators.

The simplest estimate of a population is the *point estimate,* the most common being the sample mean. A point estimate is a single value that best describes the population of interest. Let me explain this concept by using the following example.

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