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

question 110

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, the overall or average proportion of clear operations is_____ .

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Definitions:

Personal Power

Describes an individual's ability to influence or control the circumstances of their own or others' lives.

Formal Hierarchy

A formal hierarchy is an organizational structure where individuals and groups are ranked according to levels of authority, responsibility, and status within the organization.

Zone Of Indifference

A range within which attempts to influence a person will be perceived as legitimate and accepted without critical thought.

Psychological Contract

Is an unwritten set of expectations about a person’s exchange of inducements and contributions with an organization.