41. A researcher wants to assess the association between the prevalence amounts

Question

41. A researcher wants to assess the association between the prevalence amounts of processed foods. Data are presented below to evaluate whether the education level is a confounder or effect modifier for the association of interest. Assuming a 5% significance level chi-square test of independence to assess whether education and diet are independent or not the value of the chi-square test statistics (round to 2 decimal places)? of high blood pressure and . Perform . What is Diet Low in Processed Foods Total 179 221 400 Normal BP High BP College Education 124 High Schol Education 69 152 207 Diet High in Processed Foods High BP 85 153 238 Total 193 College Education High School Education Total Normal BP 64 98 162 Total 149 251 400 42. Based on the data provided in Q41, perform a Chi-square test of independence to assess whether education and high blood pressure are independent or not. What is the value of the chi-square test statistics (round to 2 decimal places)?

Explanation / Answer

Ho:Education and diet low in processed foods are independent

H1::Education and diet low in processed foods are dependent

alpha=0.05

Expected frequecne=E=row total*column total/Grand total

cHI SQ STAT=57.35

Ho:Education and diet high in processed foods are independent

H1::Education and diet high in processed foods are dependent

Chi sq stat=0.59

col tot 124 55 179 69 152 221 row tot 193 207 400 --->grand tot

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