Answered: Is there convincing evidence that the…

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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Use the three-read strategy to understand the following exercise from a statistics textbook, and then proceed to complete the exercise.

Suppose that in a study to determine if hormone therapy increases risk of venous thrombosis in menopausal women, each person in a sample of 589 women who had been diagnosed with venous thrombosis was classified according to hormone use. Each woman in a sample of 2,243 women who had not been diagnosed with venous thrombosis was also classified according to hormone use. Data from the study are given in the accompanying table. The women in each of the two samples were selected at random from patients at a large HMO in a certain U.S. state.

	Current Hormone Use
None	Esterified Estrogen	Conjugated Equine Estrogen
Venous Thrombosis	382	86	121
No Venous Thrombosis	1,439	505	299

Is there convincing evidence that the proportions of those who would fall into each of the hormone use categories are not the same for women who have been diagnosed with venous thrombosis and those who have not? Carry out a hypothesis test with a significance level of 0.05.

Find the test statistic. (Round your answer to three decimal places.)

?² =

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