Four Surgical Procedures Currently Are Used to Install Pacemakers Which of the Following Tests Will Be the Most Appropriate

question 26

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
$$\begin{array} { | r | c c c c | c | } \hline & \text { A } & \text { B } & \text { C } & \text { D } & \text { Total } \\\hline \text { Clear } & 27 & 41 & 21 & 7 & 96 \\\hline \text { Retur1 } & 11 & 15 & 9 & 11 & 46 \\\hline \text { Total } & 38 & 56 & 30 & 18 & 142 \\\hline\end{array}$$
Which of the following tests will be the most appropriate to find out which of the 4 procedures is the most 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) The Marascuilo procedure

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Definitions:

Self-Serving Bias

The common tendency to attribute one's successes to personal characteristics and failures to external factors.

Expert Testimony

A form of evidence provided by someone who is recognized as an expert in a particular field or area of knowledge.

Reputation

The general belief or opinion that people have about someone or something based on past actions or performance.

Diffusion Of Responsibility

A sociopsychological phenomenon where individuals are less likely to take action or feel a sense of responsibility in the presence of others.