TABLE 12-5 Four Surgical Procedures Currently Are Used to Install Pacemakers. If

question 115

Short Answer

TABLE 12-5
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 4 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 12-5, the test will involve ________ degrees of freedom.

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Definitions:

Sample Points

Individual items or values chosen from a population for the purpose of statistical analysis.

Student Body President

A elected representative of a student organization who represents the interests of the student population.

Undergraduate Students

Students pursuing their first degree, typically a bachelor's degree, at a college or university.

Sample Points

Specific observations or items selected from a larger population for analysis.