Four surgical procedures are used to install pacemakers. If the patient does not need to return for follow-up surgery, the operation is considereda “clear” operation. In an aim to compare the proportion of clear operations for the four procedures (using a chi-square test), the heart center collects the below patient information from their own records. Procedure A B C D Total Clear 27 41 21 7 96 Return 11 15 9 11 46 Total 38 56 30 18 142 The expected frequency for the Procedure B/Clear cell is , and the expected frequency for the Procedure C/Return cell is . 12.31 and 12.17 37.86 and 9.72 27.00 and 11.00 28.31 and 7.03
Four surgical procedures are used to install pacemakers. If the patient does not need to return for follow-up surgery, the operation is considereda “clear” operation. In an aim to compare the proportion of clear operations for the four procedures (using a chi-square test), the heart center collects the below patient information from their own records. Procedure A B C D Total Clear 27 41 21 7 96 Return 11 15 9 11 46 Total 38 56 30 18 142 The expected frequency for the Procedure B/Clear cell is , and the expected frequency for the Procedure C/Return cell is . 12.31 and 12.17 37.86 and 9.72 27.00 and 11.00 28.31 and 7.03
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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- Four surgical procedures are used to install pacemakers. If the patient does not need to return for follow-up surgery, the operation is considereda “clear” operation. In an aim to compare the proportion of clear operations for the four procedures (using a chi-square test), the heart center collects the below patient information from their own records.
|
Procedure |
|
|||
|
A |
B |
C |
D |
Total |
Clear |
27 |
41 |
21 |
7 |
96 |
Return |
11 |
15 |
9 |
11 |
46 |
Total |
38 |
56 |
30 |
18 |
142 |
The expected frequency for the Procedure B/Clear cell is , and the expected frequency for the Procedure C/Return cell is .
12.31 and 12.17
|
||
37.86 and 9.72
|
||
27.00 and 11.00 |
||
28.31 and 7.03
|
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