3. (Rosner book – Page 110, Q: Infectious Disease) A study considered risk factors of HIV infection amongintravenous drug users. It found that 40% of users who had < 100 injections per month (light users) and 55%of users who had > 100 injections per month (heavy users) were HIV positive.a. What is the probability that exactly 3 of 5 light users are HIV positive?b. What is the probability that at least 3 of 5 light users are HIV positive?c. Suppose we have a group of 10 light users and 10 heavy users. What is the probability that exactly 3of the 20 users are HIV positive?d. What is the probability that at least 4 of the 20 users are HIV positive?e. Is the distribution of number of HIV positive among the 20 users binomial? Why or why not?

Given : Light users=40% Heavy users =55% Note :As per guidelines only first 3 subparts have been…

Answered: 3. (Rosner book – Page 110, Q:…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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