Question: Preliminary analyses indicate that you can consider the assumptions for using nonpooledt-procedures satisfied. Researchers obtained the following data on the number of acute postoperative days
Preliminary analyses indicate that you can consider the assumptions for using nonpooledt-procedures satisfied. Researchers obtained the following data on the number of acute postoperative days in the hospital using the dynamic and static systems. Obtain a 95
95% confidence interval for thedifference, mu 1 minus mu 2
12, between the mean numbers of acute postoperative days in the hospital with the dynamic and static systems.(Note: x overbar 1
x1equals
=7.92
7.92, s 1
s1equals
=1.24
1.24, x overbar 2
x2equals
=10.17
10.17, and s 2
s2equals
=3.37
3.37)
Dynamic
10
10
7
7
9
9
8
8
10
10
6
6
8
8
8
8
7
7
7
7
8
8
7
7
Static
6
6
8
8
11
11
8
8
14
14
14
14
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