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.
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.
MATLAB: An Introduction with Applications
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Author:Amos Gilat
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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: There is sufficient evidence to conclude that the proportions between procedure B and procedure D are different at a 0.05 level of significance.
True
False
![Procedure
A
В
C
D
Total
Clear
27
41
21
7
96
Return
11
15
9.
11
46
Total
38
56
30
18
142](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbe4127f5-5317-4c19-af51-6bfa5eb01ca1%2F5debc7dc-8c0f-4ad0-98c5-717d734ce2f3%2Fxcut58_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Procedure
A
В
C
D
Total
Clear
27
41
21
7
96
Return
11
15
9.
11
46
Total
38
56
30
18
142
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