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

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The Answer of 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

Four Surgical Procedures Currently Are Used to Install Pacemakers