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

question 7

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: $$\begin{array}{c}\text { Procedure }\\\begin{array} { c c c c c c } \hline & \text { A } & \text { B } & \text { C } & \text { D } & \text { Total } \\\hline \text { Clear } & 27 & 41 & 21 & 7 & 96 \\\text { Return } & 11 & 15 & 9 & 11 & 46 \\\text { Total } & 38 & 56 & 30 & 18 & 142\end{array}\end{array}$$ Which of the following tests will be the most appropriate to find out which of the 4 procedures is the most effective?

• A) one-way ANOVA F test for differences among more than two means
• B) the Marascuilo procedure
• C) Z test for difference in proportions
• D) ?² test for difference in proportions

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Definitions:

Piaget

Refers to Jean Piaget, a Swiss psychologist known for his pioneering work in the field of developmental psychology and his theory of cognitive development in children.

Symbols

Representations, such as characters or images, that stand for or signify an idea, object, or relationship.

Abstractions

The process of extracting the underlying essence or general principles of a concept or an observable phenomenon, often leading to a more generalized understanding.

Formal Operational

Refers to the stage of cognitive development in Piaget's theory where individuals develop the ability to think abstractly and reason logically.