Sampling Distributions for Differences in Sample Proportions
Jackson Hernandez
9 min read
Study Guide Overview
This study guide covers comparing two proportions, focusing on calculating the standard deviation of the difference. It emphasizes the importance of adding variances, using the formula (provided), and checking the Large Counts Condition. It also reviews sampling distributions, the Central Limit Theorem (CLT), common mistakes, and includes practice problems and exam tips covering confidence intervals and hypothesis tests.
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Question 1 of 10
When comparing two sample proportions, what must you do with their standard deviations before calculating the standard deviation of the difference? 🤔
Add the standard deviations directly
Square the standard deviations, add them, then take the square root
Subtract the standard deviations
Divide the standard deviations