Instruction 15-8
Four Surgical Procedures Currently Are Used to Install

question 84

True/False

Instruction 15-8
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 |
$$\begin{array} { | l | c | c | c | c | c | } \hline & \mathrm { A } & \mathrm { B } & \mathrm { C } & \mathrm { D } & \text { Total } \\\hline \text { Clear } & 27 & 41 & 21 & 7 & 96 \\\hline \text { Return } & 11 & 15 & 9 & 11 & 46 \\\hline \text { Total } & 38 & 56 & 30 & 18 & 142 \\\hline\end{array}$$ 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 15-8,there is sufficient evidence to conclude that the proportions between procedure B and procedure C are different at a 0.05 level of significance.

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Definitions:

Basic Need

Fundamental requirements necessary for individuals to live a healthy and sustainable life, including food, water, shelter, and security.

Internal Stimuli

Things that are kinesthetic or visceral.

Psychological Homeostasis

The process by which individuals maintain mental and emotional stability despite external stressors or changes in the environment.

Homeless

Individuals or families who lack a fixed, regular, and adequate nighttime residence, including those living in shelters, transitional housing, or places not meant for human habitation.