The lecture Comparing two Proportions by David Spade, PhD is from the course Statistics Part 2. It contains the following chapters:
What is true regarding the variability in the difference between sample proportions?
What is not one of the conditions for the two-proportion procedure?
What is an appropriate interpretation of the 95% confidence interval for p1 - p2 based on the difference ˆp1 -ˆp2 and given by (a ,b)?
What is true of the hypothesis test for a difference in two population proportions?
What is the correct interpretation when we reject the null hypothesis?
Suppose proportion 1 = 0.54, sample size 1 = 450, proportion 2 = 0.37, and sample size 2 = 280. What is the confidence interval for the difference in proportions?
Suppose proportion 1 = 0.4, sample size 1 = 50, proportion 2 = 0.8, and sample size 2 = 30. What is the value of the pooled proportion?
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