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Name: A sample of 2010 adults were asked in 1990 whether they smoked (yes or
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Description: A sample of 2010 adults were asked in 1990 whether they smoked (yes or no). This same sample was asked again about their smoking status two years later. The data are below. Is there a relationship between year and smoking status? Were people more lik

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 sample of 2010 adults were asked in 1990 whether they smoked (yes or no). This same sample was asked again about their smoking status two years later. The data are below. Is there a relationship between year and smoking status? Were people more likely to report being a smoker in one of the years? Use a 5% level of significance. 1) the appropriate null and alternative hypotheses; 2) the appropriate test; 3) the decision rule; 4) the calculation of the test statistic; and 5) your conclusion including a comparison to alpha or the critical value.

1992

1990	Smoker	Non-smoker	Total
Smoker	620	97	717
Non-smoker	76	1217	1293
Total	696	1314	2010

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