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

question 68

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 test will involve ________ degrees of freedom.

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Definitions:

U.S. Army's Intelligence Test

Standardized tests developed by the United States Army to assess the intellectual capabilities and potential roles of military recruits.

Congressional Committee

A legislative sub-organization in the United States Congress that handles specific duties and conducts hearings to discuss and draft legislation.

Immigrant Groups

Populations that have moved from one country to another, often forming communities and preserving cultural practices in their new locations.

Phenotype

The observable characteristics or traits of an organism, resulting from the interaction of its genotype with the environment.