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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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A researcher notes that there seems to be a difference in the prevalence of high blood pressure among college-educated individuals who consume low amounts of processed foods and the prevalence of individuals who only have a high school education and consume high amounts of processed foods. Use the appropriate hypothesis to test for the independence of the two independent variables presented here at the 5% significance level to ensure confounding has not influenced the study's results. Then, interpret your response. Diet Low in Processed Foods Normal BP High BP 124 55 College Education High School Education Total College Education High School Education Total 69 193 207 Diet High in Processed Foods Normal BP High BP 64 85 98 152 162 153 238 Total 179 221 400 Total 149 251 400 The chi square value of 37.724 is higher than the chi square value of 3.84; therefore, we do not reject Ho at the 5% level and reject H₁, which states that level of education and the amount of processed foods in an individual's diet are not independent of one another. The chi square value of 37.724 is higher than the chi square value of 3.84; therefore, we do not reject Ho at the 5% level and reject H₁, which states that level of education and the incidence of high blood pressure are not independent of one another. The chi square value of 37.724 is higher than the chi square value of 3.84; therefore, we can reject Ho at the 5% level in favor of H₁, which states that level of education and the incidence of high blood pressure are not independent of one another. The chi square value of 37.724 is higher than the chi square value of 3.84; therefore, we can reject Ho at the 5% level in favor of H₁, which states that level of education and the amount of processed foods in an individual's diet are not independent of one another.
Transcribed Image Text:A researcher notes that there seems to be a difference in the prevalence of high blood pressure among college-educated individuals who consume low amounts of processed foods and the prevalence of individuals who only have a high school education and consume high amounts of processed foods. Use the appropriate hypothesis to test for the independence of the two independent variables presented here at the 5% significance level to ensure confounding has not influenced the study's results. Then, interpret your response. Diet Low in Processed Foods Normal BP High BP 124 55 College Education High School Education Total College Education High School Education Total 69 193 207 Diet High in Processed Foods Normal BP High BP 64 85 98 152 162 153 238 Total 179 221 400 Total 149 251 400 The chi square value of 37.724 is higher than the chi square value of 3.84; therefore, we do not reject Ho at the 5% level and reject H₁, which states that level of education and the amount of processed foods in an individual's diet are not independent of one another. The chi square value of 37.724 is higher than the chi square value of 3.84; therefore, we do not reject Ho at the 5% level and reject H₁, which states that level of education and the incidence of high blood pressure are not independent of one another. The chi square value of 37.724 is higher than the chi square value of 3.84; therefore, we can reject Ho at the 5% level in favor of H₁, which states that level of education and the incidence of high blood pressure are not independent of one another. The chi square value of 37.724 is higher than the chi square value of 3.84; therefore, we can reject Ho at the 5% level in favor of H₁, which states that level of education and the amount of processed foods in an individual's diet are not independent of one another.
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