Four Surgical Procedures Currently Are Used to Install Pacemakers

question 21

Multiple Choice

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 4 procedures, and collects the following numbers of patients from their own records: Which of the following tests will be the most appropriate to find out which of the 4 procedures is the most effective?

• A) χ² test for difference in proportions
• B) Z test for difference in proportions
• C) one-way ANOVA F test for differences among more than two means
• D) the Marascuilo procedure

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Definitions:

West Fertilizer Company

An American company that operated a fertilizer business in Texas, known for a significant explosion incident in 2013.

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Industrial or commercial sites where chemicals are produced, processed, or stored.

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The national government of a federal country, such as the United States, which has specific powers granted by the Constitution, distinct from state governments.

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Practices and policies undertaken by corporations to positively impact societal, environmental, and economic domains.