Four Surgical Procedures Currently Are Used to Install Pacemakers $\chi$ ² Test for Difference in Proportions

question 109

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 which of the 4 procedures is the most effective?

• A)\(\chi\) ² 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)The Marascuilo procedure.

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