An alcohol awareness task force at a Big-Ten university sampled 200 students after the midterm to...

 

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An alcohol awareness task force at a Big-Ten university sampled 200 students after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midtem. The following result was obtained. Did Well on Midterm Did Poorly on Midterm 20 Studying for Exam Went Bar Hopping 80 30 70 36. Referring to Scenario 4-2, what is the probability that a randomly selected student who went bar hopping did well on the midterm? a) 30/100 or 30% b) 30/110 or 27.27% c) 30/200 or 15% d) (100/200)*(110/200) or 27.50% 37. Referring to Scenario 4-2, what is the probability that a randomly selected student did well on the midterm or went bar hopping the weekend before the midterm? a) 30/200 or 15% b) (80+30)/200 or (30+80)/200 or 55% c) (30+70)/200 or (70+30)/200 or 50% d) (80+30+70)/200 or (110+100-30)200 or 90% 38. Referring to Scenario 4-2, what is the probability that a randomly selected student did well on the midterm and also went bar hopping the weekend before the midtem? a) 30/200 or 15% b) (80+30)/200 or 55% c) (30+70)/200 or 50% d) (80+30+70)/200 or 90% 39. Referring to Scenario 4-2, the events "Did Well on Midterm" and "Studying for Exam" are a) dependent. b) mutually exclusive. c) collective exhaustive. d) None of the above. 40. Referring to Scenario 4-2, the events "Did Well on Midterm" and "Studying for Exam" are a) not dependent. b) not mutually exclusive. c) collective exhaustive. d) None of the above. 41. Referring to Scenario 4-2, the events "Did Well on Midterm" and "Did Poorly on Midterm" are a) dependent. b) mutually exclusive. c) collective exhaustive. d) All of the above. An alcohol awareness task force at a Big-Ten university sampled 200 students after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midtem. The following result was obtained. Did Well on Midterm Did Poorly on Midterm 20 Studying for Exam Went Bar Hopping 80 30 70 36. Referring to Scenario 4-2, what is the probability that a randomly selected student who went bar hopping did well on the midterm? a) 30/100 or 30% b) 30/110 or 27.27% c) 30/200 or 15% d) (100/200)*(110/200) or 27.50% 37. Referring to Scenario 4-2, what is the probability that a randomly selected student did well on the midterm or went bar hopping the weekend before the midterm? a) 30/200 or 15% b) (80+30)/200 or (30+80)/200 or 55% c) (30+70)/200 or (70+30)/200 or 50% d) (80+30+70)/200 or (110+100-30)200 or 90% 38. Referring to Scenario 4-2, what is the probability that a randomly selected student did well on the midterm and also went bar hopping the weekend before the midtem? a) 30/200 or 15% b) (80+30)/200 or 55% c) (30+70)/200 or 50% d) (80+30+70)/200 or 90% 39. Referring to Scenario 4-2, the events "Did Well on Midterm" and "Studying for Exam" are a) dependent. b) mutually exclusive. c) collective exhaustive. d) None of the above. 40. Referring to Scenario 4-2, the events "Did Well on Midterm" and "Studying for Exam" are a) not dependent. b) not mutually exclusive. c) collective exhaustive. d) None of the above. 41. Referring to Scenario 4-2, the events "Did Well on Midterm" and "Did Poorly on Midterm" are a) dependent. b) mutually exclusive. c) collective exhaustive. d) All of the above.

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Did well on Midterm Did Poorly on Miterm Total 100 Studying or Exam Went Bar Hopping 80 20 30 7... View the full answer