10.5.3 In a classic study of peptic ulcer, blood types were determined for 1,655 ulcer patients. The accompanying table shows the data for these patients and for an inde- pendently chosen group of 10,000 healthy controls from the same city.° 34 Blood type Ulcer patients Controls 911 4,578 А 579 4,219 В 124 890 AB 41 313 Total 1,655 10,000 (a) The value of the chi-square statistic for this contingency table is x a = 0.01. 49.0. Carry out the chi-square test at (b) Construct a table showing the percentage distributions of blood type for patients and for controls. (c) Verify the value of x given in part (a).
10.5.3 In a classic study of peptic ulcer, blood types were determined for 1,655 ulcer patients. The accompanying table shows the data for these patients and for an inde- pendently chosen group of 10,000 healthy controls from the same city.° 34 Blood type Ulcer patients Controls 911 4,578 А 579 4,219 В 124 890 AB 41 313 Total 1,655 10,000 (a) The value of the chi-square statistic for this contingency table is x a = 0.01. 49.0. Carry out the chi-square test at (b) Construct a table showing the percentage distributions of blood type for patients and for controls. (c) Verify the value of x given in part (a).
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Transcribed Image Text:10.5.3 In a classic study of peptic ulcer, blood types were
determined for 1,655 ulcer patients. The accompanying
table shows the data for these patients and for an inde-
pendently chosen group of 10,000 healthy controls from
the same city.
34
Blood type Ulcer patients Controls
911
4,578
A
579
4,219
В
124
890
AB
41
313
Total
1,655
10,000
(a) The value of the chi-square statistic for this contingency
table is X
49.0. Carry out the chi-square test at
a = 0.01.
(b) Construct a table showing the percentage distributions
of blood type for patients and for controls.
(c) Verify the value of x given in part (a).
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