A study was done to determine the efficacy of three different drugs-A. B. and C-in relieving headache pain. Over the period covered by the study, 50 subjects were given the chance to use all three drugs. The following results were obtained: c. Let A be the set of all subjects who got relief from drug A. B the set of all subjects who got relief from drug B., and C the set of all subjects who got relief from drug C. Fill in the number for all eight regions of the following diagram. 21 reported relief from drug A 21 reported relief from drug B 31 reported relief from drug C 9 reported relief from both drugs A and B 14 reported relief from both drugs A and C 15 reported relief from both drugs B and C 41 reported relief from at least one of the drugs Note that some of the 21 subjects who reported relief from drug A may also have reported relief from drugs B or C. A similar occurrence may be Sample of Subjects d. How many subjects got relief from A only? true for the other data. a. How many people got relief from none of the drugs? b. How many people got relief from all three drugs?
A study was done to determine the efficacy of three different drugs-A. B. and C-in relieving headache pain. Over the period covered by the study, 50 subjects were given the chance to use all three drugs. The following results were obtained: c. Let A be the set of all subjects who got relief from drug A. B the set of all subjects who got relief from drug B., and C the set of all subjects who got relief from drug C. Fill in the number for all eight regions of the following diagram. 21 reported relief from drug A 21 reported relief from drug B 31 reported relief from drug C 9 reported relief from both drugs A and B 14 reported relief from both drugs A and C 15 reported relief from both drugs B and C 41 reported relief from at least one of the drugs Note that some of the 21 subjects who reported relief from drug A may also have reported relief from drugs B or C. A similar occurrence may be Sample of Subjects d. How many subjects got relief from A only? true for the other data. a. How many people got relief from none of the drugs? b. How many people got relief from all three drugs?
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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