Justifying a Claim Based on a Confidence Interval for a Population Proportion
Study Guide Overview
This AP Statistics study guide covers confidence intervals for proportions, including: defining confidence intervals, interpreting them (with examples and templates), using them for hypothesis testing, factors affecting interval width (sample size, confidence level, margin of error), and exam tips with practice multiple-choice and free-response questions (including solutions and rubrics).
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Question 1 of 11
A confidence interval is best described as:
A single value that estimates a population parameter
A range of values calculated from sample data that is likely to contain the true population parameter
The exact value of the population parameter
A value that is always equal to the sample mean