MATH 318 Midterm: MATH 318 2011 Winter Test 2
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Student id: this exam consists of 9 questions worth a total of 100 points, make sure this exam has 14 pages excluding this cover page, no aids except calculators are permitted, duration: 2 hours 30 minutes. Good luck, and enjoy your summer: each candidate should be prepared to produce his library/ams card upon request, read and observe the following rules: No candidate shall be permitted to enter the examination room after the expiration of one half hour, or to leave during the rst half hour of the examination. Candidates are not permitted to ask questions of the invigilators, except in cases of supposed errors or ambiguities in examination questions. The plea of accident or forgetfulness shall not be received: smoking is not permitted during examinations. 1 (1 p)eit e (eit eita eitb it(b a) Suppose x and y have joint p. m. f. as below (so p(x = 3, y = 1) = 1/8):
