Are customers more loyal in the East or in the West? The following table is base
ID: 3250037 • Letter: A
Question
Are customers more loyal in the East or in the West? The following table is based on information from Trends in the United Sates, published by the food marketing Institute, Washington, D.C. The columns represent loyalty (in years) at a primary supermarket. The rows represent regions of the United States.
Less Than
1 Year
1 – 2
Years
3 – 4 Years
5 – 9 Years
10 – 14 Years
15 or More Years
Row Total
32
54
59
112
77
118
452
31
68
68
120
63
173
523
53
92
93
158
106
158
660
41
56
67
78
45
86
373
157
270
287
468
291
535
2008
What is the probability that a customer chosen at random is either from the East or from the South? Round your answer to the nearest thousandth.
0.016
0.074
0.554
0.500
none of these choices
Less Than
1 Year
1 – 2
Years
3 – 4 Years
5 – 9 Years
10 – 14 Years
15 or More Years
Row Total
East32
54
59
112
77
118
452
Midwest31
68
68
120
63
173
523
South53
92
93
158
106
158
660
West41
56
67
78
45
86
373
Column Total157
270
287
468
291
535
2008
Explanation / Answer
Number of customers from East region are 452
Number of customers from Sourth region are 660
Total number of customers = 2008
Hence probability that a selected person is from either east or south zone is (452+660)/2008 = 0.554
Hence option (C) is correct
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