Is Yawning Contagious?
Comparing Two Proportions
Construct a 95% confidence interval for the difference of two proportions.
Describe the shape, center, and variability of the sampling distribution for a difference of proportions.
Calculate the standardized test statistic and P-value for a test about a difference between two proportions.
Perform a significance test about a difference between two proportions.
Want to know how many people have the coronavirus? Test randomly
How it started: Moderna's Vaccine Efficacy (VE) Study design (original article)
How it's going: Promising Interim Results from Clinical Trial of NIH-Moderna COVID-19 Vaccine