A pharmaceutical company is testing the effectiveness of a

Last updated: 5/24/2023

A pharmaceutical company is testing the effectiveness of a new drug for asthma patients The drug is given to 100 volunteers who suffer from asthma while a placebo is given to 100 other volunteers who also suffer from asthma After 4 weeks the volunteers are asked if they noticed improvement in their asthma symptoms The results of the survey are shown in the contingency table below What is the probability that a volunteer received the placebo given that he did not report a noticeable improvement in symptoms Received the Drug Received the Placebo Totals Select one O a 0 7333 O b 0 32 OC 0 88 O d 0 2667 Improved 68 12 80 Did not Improve 32 88 120 Totals 100 100 200