Questions 1 through 4 refer to the following: Irritable bowel syndrome (IBS) is
ID: 1099208 • Letter: Q
Question
Questions 1 through 4 refer to the following:
Irritable bowel syndrome (IBS) is a nonspecific intestinal disorder characterized by abdominal pain and irregular bowel habits. Each person in a random sample of 24 patients having periodic attacks of IBS was randomly assigned to one of three treatment groups, A, B, and C. The number of hours of relief while on therapy is recorded for each patient in the table below.
Treatment
A
B
C
4.7
19.5
27.6
14.8
11.2
9.7
10.1
19.4
12.4
11.9
7.8
16.4
11
11.6
23.6
5.7
9.6
10
10.5
13
5
11.2
13.6
28.1
9.988
13.213
16.600
10.847
18.144
77.951
1. Give the value of the test statistic used to test H0: ?A = ?B = ?C.
15.18
-1.96, 1.96
Treatment
A
B
C
4.7
19.5
27.6
14.8
11.2
9.7
10.1
19.4
12.4
11.9
7.8
16.4
11
11.6
23.6
5.7
9.6
10
10.5
13
5
11.2
13.6
28.1
9.988
13.213
16.600
10.847
18.144
77.951
Explanation / Answer
1. e
2. b
3. d
4. b
Anova: Single Factor SUMMARY Groups Count Sum Average Variance Column 1 10 100.735 10.0735 8.510392278 Column 2 10 137.057 13.7057 16.54399779 Column 3 10 227.351 22.7351 437.023409 ANOVA Source of Variation SS df MS F P-value F crit Between Groups 850.1301859 2 425.0650929 2.759698218 0.081187166 3.354130829 Within Groups 4158.700192 27 154.025933 Total 5008.830377 29Related Questions
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