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Sec. 8.2 Confidence Interval for a Population Proportion

Sec. 8.2 Confidence Interval for a Population Proportion

Author: Amy Scheer
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Tutorial

Sec. 8.2 Confidence Interval for a Proportion - Checking the Conditions

This portion of the tutorial covers how to check the conditions necessary to create a one-proportion z-interval.

Sec. 8.2 Confidence Interval for a Proportion - Finding the Critical Values

The sampling distribution for a proportion is approximately Normal provided certain conditions are met. This allows us to use values from a standard Normal distribution for our critical values.

Sec. 8.2 Confidence Interval for a Proportion - Calculating the Interval

In this section, we will calculate a one-proportion z-interval by hand and with a calculator.

Sec. 8.2 Confidence Interval for a Proportion - An Example Problem

Sec. 8.2 Confidence Interval for a Proportion - Finding the Sample Size

This video outlines how to determine the sample size necessary for a particular margin of error.