Estimating the Difference between Two Population Proportions
Question 8 • CA-Statistics and Probability B
Construct a 90% confidence interval to estimate the true difference in proportions pC – pD of caffeinated customers who order larges versus decaf customers who order larges.
Answer
Are the conditions for inference met?:
Yes
that the interval captures the true difference in proportions of caffeinated customers who larges versus decaf customers.:
We are 90% confident
that the interval captures the true difference in proportions of caffeinated customers who larges versus decaf customers.:
(0.048, 0.152)
that the interval captures the true difference in proportions of caffeinated customers who larges versus decaf customers.: