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The results of a recent study regarding smoking and three types of illness are show Non-Smokers Smokers Totals Illness Emphysema 20 50 70 70 80 150 Heart problem 40 40 80 Cancer 130 170 300 Totals

The results of a recent study regarding smoking and three types of illness are show Non-Smokers Smokers Totals Illness Emphysema 20 50 70 70 80 150 Heart problem 40 40 80 Cancer 130 170 300 Totals

MATLAB: An Introduction with Applications
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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The results of a recent study regarding smoking and three types of illness are shown in the following table. Non-Smokers Smokers Totals Illness Emphysema 20 50 70 70 80 150 Heart problem 40 40 80 Cancer 130 170 300 Totals We are interested in determining whether or not illness is independent of smoking. а. State the null and alternative hypotheses to be tested. b. Show the table of the expected frequencies. Compute the test statistic. с. The null hypothesis is to be tested at the 5% level. Determine the critical value for this test. d. What do you conclude? е. Determine the p-value and perform the test. Make a conclusion. Upload Choose a File
Transcribed Image Text:The results of a recent study regarding smoking and three types of illness are shown in the following table. Non-Smokers Smokers Totals Illness Emphysema 20 50 70 70 80 150 Heart problem 40 40 80 Cancer 130 170 300 Totals We are interested in determining whether or not illness is independent of smoking. а. State the null and alternative hypotheses to be tested. b. Show the table of the expected frequencies. Compute the test statistic. с. The null hypothesis is to be tested at the 5% level. Determine the critical value for this test. d. What do you conclude? е. Determine the p-value and perform the test. Make a conclusion. Upload Choose a File
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