A disease can be caused by three strains of a virus. Suppose that Type A is statistically the most widespread causing 85% of all cases, Type B causes 12% of cases and Type C causes the remaining cases. a standard course of medication XYZ is enough to treat 90% of cases caused by Type A, 30% of cases caused by Type B and 4% of cases caused by Type C. If a patient’s symptoms do not improve after a course of XYZ, how likely is it that their case is caused by strain of Type N

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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A disease can be caused by three strains of a virus. Suppose that Type A is statistically the most widespread causing 85% of all cases, Type B causes 12% of cases and Type C causes the remaining cases. a standard course of medication XYZ is enough to treat 90% of cases caused by Type A, 30% of cases caused by Type B and 4% of cases caused by Type C. If a patient’s symptoms do not improve after a course of XYZ, how likely is it that their case is caused by strain of Type N
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