TABLE 12-9
Four Surgical Procedures Currently Are Used to Install

question 143

Short Answer

TABLE 12-9
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 proportion of clear operations for the 4 procedures, and collects the following numbers of patients from their own records:
$$\begin{array}{l}\text {\quad\quad\quad\quad\quad\quad\quad Procedure }\\\begin{array} { l | r r r r | r } & \text { A } & \text { B } & \text { C } & \text { D } & \text { Total } \\\hline \text { Clear } & 27 & 41 & 21 & 7 & 96 \\\text { Return } & 11 & 15 & 9 & 11 & 46 \\\hline \text { Total } & 38 & 56 & 30 & 18 & 142\end{array}\end{array}$$ They will use this information to test for a difference among the proportion of clear operations using a chi-square test with a level of significance of 0.05.
-Referring to Table 12-9, what is the value of the critical range for the Marascuilo procedure to test for the difference in proportions between procedure B and procedure D using a 0.05 level of significance?

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Definitions:

Julian Rotter

A psychologist known for his work in social learning theory and the development of the concept of locus of control.

Internal Locus

A psychological perspective where an individual believes they can control their life and outcomes through their actions.

External Locus

A belief that one's outcomes are determined by external forces or events beyond personal control.

Culturally Relevant

Pertaining to or effectively engaging with the cultural context, values, practices, and learning styles of the individuals or communities involved.