## Objectives:

- Be able to define a point estimate
- Define level of confidence
- Construct a confidence interval for the population mean when the population standard deviation is known
- Construct a confidence interval for the population mean when the population standard deviation is unknown
- Construct a confidence interval for a population proportion
- Determine appropriate sample size

## Reading For This Module:

*Chapter 9 – Textbook
Textbook Power Points (.pptx) *

## Opening Vignettes:

** **

## Introduction:

*The previous chapter assumed some information about the population such as the mean, standard deviation or shape of the distribution. In many business situations, these values may not be known and in fact the reason for taking a sample is to estimate these values. In fact, we may use the mean of a sample to estimate the mean of the population.
*

## Dr. Waller Lecture: Confidence Intervals (video)

**Lecture Power Point** (.pptx)

## Reflection:

## Practice Quiz

**Practice Quiz** for this module, feel free to take multiple times.