SCENARIO 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.
-True or False: Referring to Scenario 12-5, the decision made suggests that the 4 procedures do
not all have the same proportion of clear operations.

Question

SCENARIO 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.
-True or False: Referring to Scenario 12-5, the decision made suggests that the 4 procedures do
not all have the same proportion of clear operations.

Quizplus · Accepted Answer

The decision implies that there is a statistically significant difference in the proportions of clear operations among the 4 procedures, indicating they are not all the same.

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