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Suppose we examined medical records of 500 individuals admitted to the hospital, and we cross-classified them by whether they had lung disease or some other disease and the number of cigs they smoked daily.  The individuals in the sample were distributed 1.What is the null hypothesis, in words, that you would test with these data? 2.Please give the row and column marginal frequencies. 3.Please calculate the number of people (to 1 decimal place) we would expect to find in each cell if the null hypothesis were true.

Suppose we examined medical records of 500 individuals admitted to the hospital, and we cross-classified them by whether they had lung disease or some other disease and the number of cigs they smoked daily.  The individuals in the sample were distributed 1.What is the null hypothesis, in words, that you would test with these data? 2.Please give the row and column marginal frequencies. 3.Please calculate the number of people (to 1 decimal place) we would expect to find in each cell if the null hypothesis were true.

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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Suppose we examined medical records of 500 individuals admitted to the hospital, and we cross-classified them by whether they had lung disease or some other disease and the number of cigs they smoked daily.  The individuals in the sample were distributed

1.What is the null hypothesis, in words, that you would test with these data?

2.Please give the row and column marginal frequencies.

3.Please calculate the number of people (to 1 decimal place) we would expect to find in each cell if the null hypothesis were true.  

 

CROSSTABULATION OF DISEASE UPON BEING ADMITTED TO HOSPITAL: LUNG CANCER VS. OTHER, BY NUMBER OF CIGS CONSUMED DAILY DAILY NUMBER OF CIGS DISEASE <25 25+ Lung Cancer 189 66 Other 212 33
Transcribed Image Text:CROSSTABULATION OF DISEASE UPON BEING ADMITTED TO HOSPITAL: LUNG CANCER VS. OTHER, BY NUMBER OF CIGS CONSUMED DAILY DAILY NUMBER OF CIGS DISEASE <25 25+ Lung Cancer 189 66 Other 212 33
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