In a comparative study of two new drugs, A and B, 350 patients were treated with drug A, and 375 patients were treated with drug B. (The two treatment groups were randomly and independently chosen.) It was found that 255 patients were cured using drug A and 262 patients were cured using drug B. Let p, be the proportion of the population of all patients who are cured using drug A, and let p, be the proportion of the population of all patients who are cured using drug B. Find a 99% confidence interval for p,-p,. Then find the lower limit and upper limit of the 99% confidence interval. Carry your intermediate computations to at least three decimal places. Round your responses to at least three decimal places. (If necessary, consult a list of formulas.) Lower limit: Upper limit:

In a comparative study of two new drugs, A and B, 350 patients were treated with drug A, and 375 patients were treated with drug B. (The two treatment groups were randomly and independently chosen.) It was found that 255 patients were cured using drug A and 262 patients were cured using drug B. Let p, be the proportion of the population of all patients who are cured using drug A, and let p, be the proportion of the population of all patients who are cured using drug B. Find a 99% confidence interval for p,-p,. Then find the lower limit and upper limit of the 99% confidence interval. Carry your intermediate computations to at least three decimal places. Round your responses to at least three decimal places. (If necessary, consult a list of formulas.) Lower limit: Upper limit:

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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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Concept explainers

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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In a comparative study of two new drugs, A and B, 350 patients were treated with drug A, and 375 patients were treated with drug B. (The two treatment
groups were randomly and independently chosen.) It was found that 255 patients were cured using drug A and 262 patients were cured using drug B. Let p, be
the proportion of the population of all patients who are cured using drug A, and let p, be the proportion of the population of all patients who are cured using
drug B. Find a 99% confidence interval for p,-p,. Then find the lower limit and upper limit of the 99% confidence interval.
Carry your intermediate computations to at least three decimal places. Round your responses to at least three decimal places. (If necessary, consult a list of
formulas.)
Lower limit:
Upper limit:

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