Four Surgical Procedures Currently Are Used to Install Pacemakers

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: Procedure

Which of the following tests will be the most appropriate to find out whether the 4 procedures are equally effective?

A) X² 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.