Answered: Suppose researchers are interested in…

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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Suppose researchers are interested in estimating the prevalence of HIV in a population of
adolescent intravenous drug users determined to equal 9.4% in the population. In order to
estimate the prevalence of the disease, the researchers need to randomly sample from the
population of potential participants in their study. Suppose the researchers are able to randomly
sample 127 participants, and find that 29 are co-infected with the diseases of interest.
A) Can we approximate this distribution with the normal? Why or why not?
B) Create a Z score for this sample.
C) What is the probability of observing the sample that was collected?

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