TABLE 11-5 Four Surgical Procedures Currently Are Used to Install Pacemakers. If

question 19

Short Answer

TABLE 11-5
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 four procedures, and collects the following numbers of patients from their own records:

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 11-5, the expected cell frequency for the Procedure D/Return cell is ________.

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Definitions:

Environmental Impact Statement

A document prepared to describe the effects proposed projects or actions may have on the environment and society.

Proposed Action

A plan or course of action that is put forward for consideration or implementation.

Wetlands Protection Act

A set of regulations designed to protect wetlands from degradation due to construction, development, and pollution.

Clean Water Act

U.S. federal law aimed at reducing pollutants entering the nation's waters and regulating quality standards for surface waters.