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

question 206

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 12-18, the decision rule for a level of significance of 0.05 using the Kruskal-Wallis test is to reject the null hypothesis if the test statistic H is _______assuming that the sample sizes are large enough to use a chi-square approximation.

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Definitions:

Dynamic Communication

Communication practices characterized by adaptability, interactivity, and responsiveness to changing contexts or audiences.

Organizational Stake

An interest or share in an undertaking or organization, typically referring to how various stakeholders can affect or be affected by the organization's activities and policies.

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The attempt to influence or control people's beliefs, values, and behaviors through normative ideas and assumptions within an organization or society.

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