Paired Sample t test.
The data below shows the time to process an inpatient admission, before and after a system usage training session was given. The following hypotheses were formulated for this study:
H0: admission processing times after training are equal to or greater before training.
Ha: admission processing times after training are less than before training.
|
Person
|
Before
|
After
|
|
1
|
21.00
|
18.66
|
|
2
|
22.81
|
16.27
|
|
3
|
20.53
|
18.17
|
|
4
|
21.58
|
21.27
|
|
5
|
18.77
|
21.12
|
|
6
|
27.71
|
18.31
|
|
7
|
19.00
|
22.24
|
|
8
|
22.38
|
25.83
|
|
9
|
24.16
|
22.28
|
|
10
|
20.29
|
15.57
|
|
11
|
25.33
|
24.60
|
|
12
|
20.99
|
24.51
|
|
13
|
29.74
|
29.76
|
|
14
|
16.63
|
8.68
|
|
15
|
24.45
|
24.31
|
|
16
|
23.04
|
19.64
|
|
|
|
A. What was the mean processing time before training?
B. What is the mean processing time after training?
C. What is the test statistic, t?
D. Accept or reject null hypothesis?
E. Was training successful?