Question

In: Statistics and Probability

A problem with a telephone line that prevents a customer from receiving or making calls is...

A problem with a telephone line that prevents a customer from receiving or making calls is upsetting to both the customer and the telephone company. Samples of 20 problems reported to two different offices of a telephone company and the time to clear these problems​ (in minutes) from the​ customers' lines are provided in the Excel sheet labeled 'Phone Lines'.

Use alpha as 0.05

What test will you use?

What is the critical value?

Reject Ho?

Is there evidence of a difference?

Office 1 Office 2
1.52 7.57
1.51 3.84
0.6 0.24
2.52 1.03
0.72 0.61
1.72 0.33
4.12 3.01
3.87 2.14
1.27 0.37
3.08 4.11
1.14 3.96
0.5 0.88
0.77 1.95
1.6 0.52
0.71 1.72
1.09 4.25
6.13 0.18
3.79 1.35
5.25 1.41
0.9 0.53
Office 1 Office 2
1.52 7.57
1.51 3.84
0.6 0.24
2.52 1.03
0.72 0.61
1.72 0.33
4.12 3.01
3.87 2.14
1.27 0.37
3.08 4.11
1.14 3.96
0.5 0.88
0.77 1.95
1.6 0.52
0.71 1.72
1.09 4.25
6.13 0.18
3.79 1.35
5.25 1.41
0.9 0.53

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