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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 twoproportion 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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