Multiple Choice
Four surgical procedures currently are used to install pacemakers.If the patient does not need to return for follow-up surgery,the operation is called a "clear" operation.A heart center wants to compare the 4 procedures,and collects the following numbers of patients from their own records: 
Which of the following tests will be the most appropriate to find out whether the 4 procedures are equally effective?
A) χ2 test for difference in proportions
B) Z test for difference in proportions
C) One-way ANOVA F test for differences among more than two means
D) McNemar test
Correct Answer:
Verified
Correct Answer:
Verified
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