Refer to the data above to solve this problem. The premise of this problem is th
ID: 3156883 • Letter: R
Question
Refer to the data above to solve this problem. The premise of this problem is that you are looking at a group of patients with heart failure. Patients either have ischemic cardiomyopathy (ICM) or non-ischemic cardiomyopathy (NICM). You have gathered information about their smoking history. You are wondering if there is a relationship between these 2 variables (i.e. type of heart disease and history of tobacco use). (Ischemic cardiomyopathy is a result of plaque buildup in vessels.)
Answer questions 1 through 5 below.
#1. What type of variables do you have? Numerical or Categorical (complete calculations for both A & B)?
A. Type of heart disease is a __________________ variable.
B. History of tobacco use is a ___________________ variable.
#2. Which variable is independent (select the correct answer)?
A. History of Tobacco Use
B. History of heart disease
#3. If you were to test the relationship between the 2 variables, which inferential statistical test would you use (select the correct answer)?
A. t-test
B. Simple linear regression
C. Chi-Square test
#4. What would your alternative hypothesis (H1) state (select the correct answer)?
A. Type of heart disease is independent of history of tobacco use.
B. Type of heart disease is dependent on history of tobacco use.
#5. Setup a contingency table for this problem in the table below. Label all 4 categories in the fields that state "category title". Enter the counts in the fields that state "count". Calculate the totals for each field that states "total".
Patient has Ischemic Cardiomyopathy (ICM) or Non-Ischemic Cardiomyopathy (NICM)? Does the Patient have a History of Tobacco Use? NICM NO NICM NO NICM NO NICM No NICM YES NICM YES NICM NO NICM NO NICM YES NICM YES NICM NO NICM NO NICM YES NICM YES NICM NO NICM YES NICM YES NICM NO NICM NO NICM NO NICM NO NICM NO NICM YES NICM NO NICM NO NICM YES NICM NO NICM NO NICM YES NICM YES NICM YES NICM NO NICM YES NICM YES NICM YES NICM NO NICM YES NICM NO NICM NO NICM NO NICM NO NICM YES NICM YES NICM YES NICM NO NICM YES NICM YES NICM NO NICM NO NICM NO NICM YES NICM NO NICM NO NICM NO NICM YES NICM YES NICM NO NICM YES NICM NO NICM YES NICM NO NICM YES NICM YES NICM YES NICM NO NICM YES NICM NO NICM NO NICM NO ICM YES ICM NO ICM YES ICM NO ICM YES ICM NO ICM NO ICM YES ICM NO ICM NO ICM YES ICM Yes ICM NO ICM YES ICM YES ICM YES ICM YES ICM YES ICM NO ICM NO ICM NO ICM NO ICM YES ICM YES ICM NO ICM NO ICM NO ICM NO ICM YES ICM YES ICM YES ICM YES ICM YES ICM YES ICM YES ICM YES ICM NO ICM NO ICM YES ICM NO ICM YES ICM YES ICM YES ICM YES ICM YES ICM YES ICM YES ICM YES ICM Yes ICM NO ICM YES ICM NO ICM YES ICM NO ICM YES ICM YES ICM YES ICM NO ICM YES ICM NO ICM YES ICM NO ICM YES ICM NO ICM NO ICM YES ICM YES ICM YES ICM YES ICM YES ICM YES ICM YES ICM NO ICM YES ICM NO ICM NO ICM NO ICM YES ICM YES ICM YES ICM YES ICM YES ICM YES ICM NO ICM YESExplanation / Answer
1. A. Type of heart disease is a Categorical variable.
B. History of tobacco use is a Categorical variable.
2.A. History of Tobacco Use
3. B. Simple linear regression
4. A. Type of heart disease is independent of history of tobacco use
5.
YES NO ICM 55 30 85 NICM 30 39 69 85 69 154