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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:
Procedure
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 Scenario 12-5,the null hypothesis will be rejected.
Withdrawal
The symptoms experienced by an individual when reducing or discontinuing the intake of a substance they are dependent on.
Addictive Drug
A substance that leads to compulsive use, characterized by a psychological and/or physical dependence.
Discomfort
A feeling of unease or pain, either physical or psychological.
Psychoactive Drugs
Substances that affect the mind, mood, or other mental processes by altering brain function.
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