Instruction 15-6
Four Surgical Procedures Currently Are Used to Install

question 37

True/False

Instruction 15-6
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 centre wants to compare the proportion of clear operations for the four procedures, and collects the following numbers of patients from their own records:
| Procedure |
$$\begin{array} { | l | c | c | c | c | c | } \hline & \text { A } & \text { B } & \text { C } & \text { D } & \text { Total } \\\hline \text { Clear } & 27 & 41 & 21 & 7 & 96 \\\hline \text { Return } & 11 & 15 & 9 & 11 & 46 \\\hline \text { Total } & 38 & 56 & 30 & 18 & 142 \\\hline\end{array}$$ They will use this information to test for a difference among the proportion of clear operations using a chi-square test with a 0.05 level of significance.
-Referring to Instruction 15-6,there is sufficient evidence to conclude that the proportions between procedure A and procedure C are different at a 0.05 level of significance.

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Definitions:

Logical Evaluation

The process of examining statements, hypotheses, or arguments critically and systematically using reasoning and logic to assess their validity or soundness.

Reason

The mental capacity of an individual to apply logic in analyzing and solving problems, and in making decisions or forming judgments.

Critical Thinking

The objective analysis and evaluation of an issue in order to form a judgment.

Biological Psychologists

Scientists who specialize in understanding the relationship between the psychological processes and the underlying physiological events—or, in other words, the mind-body phenomenon.