28) It is known that 42% of Iowa City residents support O\'Brien for County Exec

Question

28) It is known that 42% of Iowa City residents support O'Brien for County Executive. Find the probability that exactly three of ten randomly chosen Iowa City residents support O'Brien for County Executive. a) .082 b).125 ) .196 d) .225 e) .256 29) Suppose 45% of GlaxCo customers are from California, 65% are women, and 15% are women from California. Determine the percentage who are women OR from California. a) .80 b) 85c) .90 d) .95 e) .98 30) In (29), find the probability that a GlaxCo customer is a man, given that s/he is a not from California a) .09 b) .12c) 15 d) .18 e) .21 ) A box of candy bars contains 5 Snickers,3 Milky Ways and 2 Mars Bars. You randomly choose two of these candy bars for your Halloween basket. Determine the probability that both chosen bars are the same. a) .25 b) .31 ).35 d) .40 e) 44 32) In the town of Mount Airy, 60% of the adult residents are female and the rest are male. 30% of the male residents smoke, while only 20% of the female residents smoke. Find the probability that a randomly chosen resident is female, given that s/he smokes. a) .30 b) .35 c) 40d) .45 e) .50

Explanation / Answer

28. (c) 0.196

29. (d) 0.95

30. (a) 0.09

31. (b) 0.31

32. (e) 0.50

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