zuai-logo

Constructing a Confidence Interval for a Population Proportion

Isabella Lopez

Isabella Lopez

8 min read

Listen to this study note

Study Guide Overview

This study guide covers confidence intervals for proportions, including what they are, how to calculate them, and when to use them. Key topics include checking conditions (randomness, independence, normality), the one-sample z-interval, calculating the margin of error and point estimate, and understanding confidence levels. It also covers using a calculator for these calculations and provides practice questions.

Question 1 of 12

What is the main purpose of constructing a confidence interval for a population proportion? ๐Ÿค”

To calculate the exact population proportion

To estimate a range of plausible values for the population proportion

To determine the sample size needed for a study

To confirm the sample proportion is correct