Using the below exhibit formulate a statistical hypothesis appropriate for the consumer group's purpose, and then calculate the mean average miles per gallon. Compute the sample variance and sample standard deviation. Determine the most appropriate statistical test using 0.05 significance level.
|
purchaser
|
miles per gallon
|
Purchaser
|
miles per gallon
|
|
1
|
30.9
|
13
|
27
|
|
2
|
24.5
|
14
|
26.7
|
|
3
|
31.2
|
15
|
31
|
|
4
|
28.7
|
16
|
23.5
|
|
5
|
35.1
|
17
|
29.4
|
|
6
|
29
|
18
|
26.3
|
|
7
|
28.8
|
19
|
27.5
|
|
8
|
23.1
|
20
|
28.2
|
|
9
|
31
|
21
|
28.4
|
|
10
|
30.2
|
22
|
29.1
|
|
11
|
28.4
|
23
|
21.9
|
|
12
|
29.3
|
24
|
30.9
|