Solutions Statistics

A researcher has observed independent samples of females and males, recording how long each person t

Question: A researcher has observed independent samples of females and males, recording how long each person took to complete his or her shopping at a local mall. The respective times, in minutes, are listed in file XR11072. Using the 0.025 level of significance in a one-tail test, would females appear to exhibit more variability than males in the length of time shopping in this mall.

(File XR11072)

females	males
26	33
35	40
75	50
63	32
36	28
71	39
54	32
68	33
37	31
48	36
42	26
43	37
73	38
55	21
47	39
71	48
27	38
56	36
37	59
25	59
88	53
42	59
33	35
66	38
45	24
53	28
46	45
74	28
58	23
51	15
58	61
48	31
48	17
42	55
55	31
50	55
61	37
28	36
41	20
58	48