Answered: What is the mean and standard deviation…

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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A new method of HIV testing has been proposed based on a new quick detection procedure where saliva is examined. Suppose that the new method tests 176 HIV positive persons and falsely categorizes (i.e., return negative results) 25 of them. Assuming the current best standard of practice for saliva based quick detection HIV tests has a false negative rate of only 10%, determine if the accuracy of the two tests are significantly different at 95% confidence level. Assume that we can use a z-test. Let ?=False negative rate of new test

What is the mean and standard deviation of the normal approximation for p-hat under Null hypothesis?

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