MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Need help with #1 Does the  normality assumption appear to be reasonable and why?

Hay Fever Relief Data: A research laboratory was developing a new compound for the relief of severe cases of
hay fever. In an experiment with 36 volunteers. the amounts of the two active ingredients (factors A and B ) in
the compound were varied at three levels each. Randomization was used in assigning four volunteers to each of
the nine treatments. The data on hours of relief follow.
Factor B (ingredient 2)
j=1
Low
j = 2
Medium
Factor A
j= 3
(ingredient 1)
High
i = 1
Low
2.4
4.6
4,8
...
...
2.5
4.7
4.6
i = 2
Medium
5.8
8.9
9.1
...
...
5.3
9.0
9.4
i = 3 High
6.1
9.9
13.5
...
...
...
6.2
10.1
13.2
Use the corresponding SAS output to answer each of the following questions.
1. Does the normality assumption appear to be reasonable here?
Q-Q Plot for residuals
0.4
0.2
0.0
|
-0.2
o 000
-0.4
-0.6
-2
-1
2
3
Normal Quantiles
sjenpisa
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Transcribed Image Text:Hay Fever Relief Data: A research laboratory was developing a new compound for the relief of severe cases of hay fever. In an experiment with 36 volunteers. the amounts of the two active ingredients (factors A and B ) in the compound were varied at three levels each. Randomization was used in assigning four volunteers to each of the nine treatments. The data on hours of relief follow. Factor B (ingredient 2) j=1 Low j = 2 Medium Factor A j= 3 (ingredient 1) High i = 1 Low 2.4 4.6 4,8 ... ... 2.5 4.7 4.6 i = 2 Medium 5.8 8.9 9.1 ... ... 5.3 9.0 9.4 i = 3 High 6.1 9.9 13.5 ... ... ... 6.2 10.1 13.2 Use the corresponding SAS output to answer each of the following questions. 1. Does the normality assumption appear to be reasonable here? Q-Q Plot for residuals 0.4 0.2 0.0 | -0.2 o 000 -0.4 -0.6 -2 -1 2 3 Normal Quantiles sjenpisa
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Given information:

The Q-Q graph for residuals is given.

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