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

Question

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

Quizplus · Accepted Answer

The statement mentions that a chi-square test was conducted with a level of significance of 0.05 and a decision was made based on the results. If the p-value is less than 0.05, it suggests that there is a significant difference among the proportions of clear operations for the 4 procedures. Therefore, the decision made suggests that the 4 procedures do not all have the same proportion of clear operations, making option A the correct answer.

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