2. To compare the efficacy of pediatric asthma treatment by nebulizer and metered-dose inhaler with the use of a spacer (MDI-spacer), 15 children were given both types of treatments for each week and their asthma score were obtained at the end of the week. The asthma scores range from 5 (poor control of asthma) to 25 (complete control of asthma), with higher scores reflecting greater asthma control. An ACT score >19 indicates well-controlled asthma. The following is the table of data obtained:
Child
Nebulizer
MDT
1
9
12
2
18
21
3
14
19
4
18
18
5
16
16
6
14
19
7
7
6
8
20
19
9
13
16
10
13
11
11
10
14
12
14
15
13
20
18
14
12
14
15
12
15
• Test the hypothesis that there is a difference between the two asthma treatments using the paired t-test. All 4 steps must be worked out.
3. Test the same hypothesis using Wilcoxon signed rank test. First create a column of differences. Then the 4 steps of hypothesis testing must be worked out. Note that there is a slight difference in the way the hypotheses are written for Wilcoxon signed rank test. Please read books or online sources to correctly handle the difference value of 0.