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JAMA study of heart patients. The Journal of the American
Chapter 10, Problem 44SE(choose chapter or problem)
Problem 44SE
JAMA study of heart patients. The Journal of the American Medical Association (Apr. 18, 2001) published the results of a study of alcohol consumption in patients suffering from acute myocardial infarction (AMI). The patients were classified according to average number of alcoholic drinks per week and whether or not they had congestive heart failure. A summary of the results for 1,913 AMI patients is shown in the table.
Source: Mukamal, K. J., et al. “Prior alcohol consumption and mortality following acute myocardial infarction,” Journal of the American Medical Association, Vol. 285, No. 15, April 18, 2001 (Table 1).
a. Find the sample proportion of abstainers with congestive heart failure.
b. Find the sample proportion of moderate drinkers (patients who have less than 7 drinks per week) with congestive heart failure.
c. Find the sample proportion of heavy drinkers (patients who have 7 or more drinks per week) with congestive heart failure.
d. Compare the sample proportions, parts a–c. Does it appear that the proportion of AMI patients with congestive heart failure depends on alcohol consumption?
e. Give the null hypothesis for testing whether the proportion of AMI patients with congestive heart failure depends on alcohol consumption.
f. Conduct the test, part e, using α = .05. What do you conclude?
Questions & Answers
QUESTION:
Problem 44SE
JAMA study of heart patients. The Journal of the American Medical Association (Apr. 18, 2001) published the results of a study of alcohol consumption in patients suffering from acute myocardial infarction (AMI). The patients were classified according to average number of alcoholic drinks per week and whether or not they had congestive heart failure. A summary of the results for 1,913 AMI patients is shown in the table.
Source: Mukamal, K. J., et al. “Prior alcohol consumption and mortality following acute myocardial infarction,” Journal of the American Medical Association, Vol. 285, No. 15, April 18, 2001 (Table 1).
a. Find the sample proportion of abstainers with congestive heart failure.
b. Find the sample proportion of moderate drinkers (patients who have less than 7 drinks per week) with congestive heart failure.
c. Find the sample proportion of heavy drinkers (patients who have 7 or more drinks per week) with congestive heart failure.
d. Compare the sample proportions, parts a–c. Does it appear that the proportion of AMI patients with congestive heart failure depends on alcohol consumption?
e. Give the null hypothesis for testing whether the proportion of AMI patients with congestive heart failure depends on alcohol consumption.
f. Conduct the test, part e, using α = .05. What do you conclude?
ANSWER:Step 1 of 8
The given information is a study of alcohol consumption in patients suffering from acute myocardial infraction (AMI).
The patients were classified according into average number of alcoholic drinks per week and whether or not they had congestive heart failure.
