MATH 214 Study Guide - Midterm Guide: Convenience Sampling, Sampling Frame, Sampling Error
10 Jan 2019
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Math 214 spring 2011 exam 2 answer key: a) . 4 + . 65 . 32 = . 73, a, 1 . 73 = . 27, p(v|f) = . 32/. 4 = . 8, no. P(v)p(f) = (. 4)(. 65) = . 26 . 32 = p(v and f: (. 65)(. 65)(. 65)(. 65) = . 1785, (. 6)(. 6)(. 6)(. 4) = . 0864. We should care about their opinions too: a scores on black-black only, so p(a scores) = (5/7)(4/6) = 20/42. B scores on black-white or white-black , so p(b scores) = (5/7)(2/6) + (2/7)(5/6) = 20/42: a) f, f, f, t, t, t, t. B: 4/12 (= 1/3, s = {1, 3, 5, s = {mmm, mmw, mww, www, a) s = {yes, no} (or {even, odd}, a) many answers are possible. For instance, maybe the survey was worded in such a way that it led people to (perhaps unconsciously) favor the mayor. Or, maybe the consultant used an incomplete sampling frame for instance, only calling people who had voted in the previous election.
