Voters Suppose that in your city 37% of the voters are registered as Democrats, 29% as Republicans, and 11% as members of other parties (Liberal, Right to Life, Green, etc.). Voters not aligned with any official party are termed Independent. You are conducting a poll by calling registered voters at random. In your first three calls, what is the probability you talk to a) all Republicans? b) no Democrats? c) at least one Independent?
Fall 2009 Stats 350 Exam 1 Explanations 1. a. The population of interest for this survey is: All higher education professionals in the United States. The second and fourth options are incorrect because they refer to the specific sample. The third option is incorrect because higher education professionals not institutions were surveyed. b. The value 0.693 corresponds to: , statistic, and sample proportion. Circle all and only these 3. 2. This is an example of confounding. The proposed relationship between coffee and heart attacks may be due entirely or in part to the tendency for smokers to both have more heart attacks and drink more coffee. 3. No, this is a time-plot not a histogram. 4. a. Length of dinner in