A researcher is doing a study to understand the relationship between different c
ID: 3269424 • Letter: A
Question
A researcher is doing a study to understand the relationship between different cardiovascular risk factors such as diabeyes, hypertension, and smoking. She wants to explore whether having hypertension is associated with diabetes or smoking. She runs two separate statistical tests, and gets the following output.
Based on this output, select the correct statement about the relationships between hypertension and diabetes and hypertension and smoking? Please select the answer and give explaination. A. being hypertensive is associated with diabetes but not smoking B. being hypertensive is associated with smoking but not diabetes C. Being hypertensive is associated with smoking and diabetes D. being hypertensive is associated with smoking or diabetes.
Diabetes
Hypertension No Yes Totals
No 506 7 513
Yes 74 20 94
Total 580 27 607
Pearson chi2(1) = 262.04 p-value <0.0001
Smoker
Hypertension No Yes Totals
No 345 162 507
Yes 57 36 93
Total 402 198 600
Pearson Chi2(1)= 3.8191 p-value 0.431
Explanation / Answer
Ans:
H0:Diabetes and hypertension are independent.
H1:Diabetes and hypertension are not independent.
As,p-value<0.0001 i.e less than any significance level,So we reject null hypothesis.
We have sufficient evidence to suggest that diabetes and hypertension are not independent(or are associated).
H0:Smoking and hypertension are independent.
H1:Smoking and hypertension are not independent.
As,p-value>significance level say 0.1,We fail to reject null hypothesis.
We have sufficient evidence to suggest that smoking and hypertension are independent(or are not associated).
Hence,the Option A is correct (being hypertensive is associated with diabetes but not smoking )
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