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Part B, Question 2: Use the samples listed in the table to decide whether there ...
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Part B, Question 2:
Use the samples listed in the table to decide whether there is a significant difference in the average customer services response time of two electricity providers A and B. Assume the customer services response time follows normal distribution and select the level of significance as 0.05
A (min)
|
B (min)
|
20.4
|
20.2
|
24.2
|
16.9
|
15.4
|
18.5
|
21.4
|
17.3
|
20.5
|
20.5
|
19.5
|
19.1
|
21.5
|
|
(a) Please choose the most appropriate type of hypothesis test.
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