Question

Kuya is relocating to China to manage a local branch of world news broadcasting station. He needs to decide on which mobile phone providers he should select based on a sample data of monthly charges from various subscribers. He came to you with the data to determine the provider with the lowest charges, on the average. Which provider would you advise Kuya to select?

Mobile	Unicom	Telecom
62	60	62
55	71	58
69	64	68
58	65	57
56	67	63
63	64	57
63	71	69
63	72	68
64	65	67
64	64	69
64	65	68
64	70	60
57	71	63
61	64	69
59	68	69
57	67	66
57	72	62
53	71	66
51	64	67
62	68	62
59	72	60
71	65	59
59	73	57
58	72	59
68	73	65

The appropriate test for this problem is:

one-way ANOVA

repeated measurements

The obtained statistic is:

F = 17.7

F = 1.77

F = 7,71

F = .177

The associated p value is:

< .05

< .01

< .001

< .0001

Decision is:

reject the null

retain the null

Conclusion is:

1)go with Mobile

2)go with Unicom

3)a toss up between Mobile and Unicom

4)no conclusion can be drawn

Answer 1

applying one way ANOVA on above data:

Groups	Count	Sum	Average	Variance
Mobile	25	1517	60.68	23.47667
Unicom	25	1698	67.92	13.99333
Telecom	25	1590	63.6	18.75
ANOVA
Source of Variation	SS	df	MS	F	P-value
Between Groups	663.39	2.00	331.69	17.70	0.0000
Within Groups	1349.28	72.00	18.74
Total	2012.67	74.00

The appropriate test for this problem is- one-way ANOVA

The obtained statistic is: F = 17.7

The associated p value is: < .0001

Decision is: reject the null

Conclusion is: 1)go with Mobile