Discussion:
Q: Two gasoline additives will be tested to determine their impact on miles per gallon for passenger cars. In the experiment, each car was tested with both gasoline additives. Use a level of significance α = 0.05 and the rank sum test Wilcoxon test whether any significant difference in the two additives.
|
CAR
|
ADITIVE A
|
ADITIVE B
|
|
1
|
20.12
|
18.05
|
|
2
|
23.56
|
21.77
|
|
3
|
22.03
|
22.57
|
|
4
|
19.15
|
17.06
|
|
5
|
21.23
|
21.22
|
|
6
|
24.77
|
23.80
|
|
7
|
16.16
|
17.20
|
|
8
|
18.55
|
14.98
|
|
9
|
21.87
|
20.03
|
|
10
|
24.23
|
21.15
|
|
11
|
23.21
|
22.78
|
|
12
|
25.02
|
23.70
|