Discuss below:
Q: For independent samples of customers of Internet providers A and B, the ages are as listed. Using the 0.05 level of significance in a nondirec-tional test, examine whether the variation in ages could be the same for customers of the two providers.
Provider A |
Provider B |
28 |
47 |
|
32 |
45 |
|
29 |
41 |
|
34 |
47 |
|
30 |
60 |
|
38 |
44 |
|
40 |
41 |
|
40 |
23 |
|
39 |
21 |
|
35 |
30 |
|
30 |
38 |
|
29 |
39 |
|
22 |
37 |
|
36 |
40 |
|
35 |
52 |
|
29 |
28 |
|
35 |
39 |
|
34 |
29 |
|
32 |
46 |
|
48 |
36 |
|
38 |
21 |
|
35 |
44 |
|
25 |
55 |
|
43 |
55 |
|
42 |
36 |
|
42 |
36 |
|
44 |
48 |
|
34 |
31 |
|
34 |
37 |
|
40 |
48 |
|
38 |
28 |
|
38 |
44 |
|
36 |
29 |
|
39 |
43 |
|
30 |
45 |
|
42 |
43 |
|
26 |
40 |
|
41 |
43 |
|
33 |
40 |
|
28 |
46 |
|
31 |
39 |
|
36 |
29 |
|
21 |
46 |
|
39 |
37 |
|
39 |
42 |
|
27 |
40 |
|
43 |
41 |
|
31 |
35 |
|
30 |
37 |
|
31 |
39 |
|