We want to compare two factories, with respect to the satisfaction shown by customers regarding the service during the period of stay in each factory. For this purpose, customers of similar size were randomly selected. Each customer filled out a questionnaire and the responses generated ratings ranging from 0 to 100, indicating the degree of satisfaction. The results were: Client A B 93 60 2 86 58 85 47 4 90 62 5 91 58 6. 82 61 88 63 8 86 64 9 87 68 10 85 58 11 57 12 67 13 61 14 56 15 58 Based on the data presented, test whether the population means are equal. What's your conclusion? Use a = 0.05 Use: Z0,025 = -1,96 t(0,025;23) = -2,069 Z0,05 = -1,645 t(0,05;23) = -1,714

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We want to compare two factories, with respect to the satisfaction shown by customers regarding the
service during the period of stay in each factory. For this purpose, customers of similar size were randomly
selected. Each customer filled out a questionnaire and the responses generated ratings ranging from 0 to
100, indicating the degree of satisfaction. The results were:
Client
A
B
1
93
60
2
86
58
3
85
47
4
90
62
5
91
58
82
61
7
88
63
8.
86
64
9
87
68
10
85
58
11
57
12
67
13
61
14
56
15
58
Based on the data presented, test whether the population means are equal. What's your conclusion? Use a
= 0.05
Use:
Z0,05 = -1,645
t(0,05;23) = -1,714
Z0,025 = -1,96
t(0,025;23) = -2,069
Transcribed Image Text:We want to compare two factories, with respect to the satisfaction shown by customers regarding the service during the period of stay in each factory. For this purpose, customers of similar size were randomly selected. Each customer filled out a questionnaire and the responses generated ratings ranging from 0 to 100, indicating the degree of satisfaction. The results were: Client A B 1 93 60 2 86 58 3 85 47 4 90 62 5 91 58 82 61 7 88 63 8. 86 64 9 87 68 10 85 58 11 57 12 67 13 61 14 56 15 58 Based on the data presented, test whether the population means are equal. What's your conclusion? Use a = 0.05 Use: Z0,05 = -1,645 t(0,05;23) = -1,714 Z0,025 = -1,96 t(0,025;23) = -2,069
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