SOLUTION: To test the effectiveness of a new vaccine, researchers gave 100 volunteers the conventional treatment
and gave 100 other volunteers the new vaccine. The results are shown in the
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-> SOLUTION: To test the effectiveness of a new vaccine, researchers gave 100 volunteers the conventional treatment
and gave 100 other volunteers the new vaccine. The results are shown in the
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Question 1172360: To test the effectiveness of a new vaccine, researchers gave 100 volunteers the conventional treatment
and gave 100 other volunteers the new vaccine. The results are shown in the table below.
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|| Treatment || Disease Prevented || Disease Not Prevented ||
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||New Vaccine || 68 || 32 ||
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||Conventional Treatment || 62 || 38 ||
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a. What is the probability that the disease is prevented in a volunteer chosen at random? 13/20
b. What is the probability that the disease is prevented in a volunteer who was given the new vaccine? 17/25
c. What is the probability that the disease is prevented in a volunteer who was not given the new vaccine? 31/50
