Unit 9: Sampling

Text reading and homework:

Read chapters 20, 21 and 23 of FPP and do the following review exercises:
Chapter 20 (pages 371-373): 1, 3, 4, 5, 6
Chapter 21 (pages 391-394): 2, 3, 4, 5, 12
Chapter 23 (pages 425-428): 1, 2, 3, 4, 5

Reading:

"January 27, 2012 -- Romney Pulls Ahead in See-Saw Florida Primary, Quinnipiac University Poll Finds; Men Shift from Gingrich To Romney"

Possible essay questions:

One short paragraph gives confidence intervals for all the percentages quoted in this press release. Do they really all have the same confidence interval? Or are they not 95% confidence intervals? (Why or why not?)
This poll was taken about a week before the Florida primary (which has not occurred as I compose this). How accurate are the results -- not just who won, or in what order, but percentages of the vote (at least the totals, if not the fragmented populations -- men, women, Tea Party members, etc.)? Are they within the quoted confidence intervals?