(Solution) - A problem with a telephone line that prevents a customer -(2025 Original AI-Free Solution)

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Academic Level: Undergrad. (yrs 3-4)

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Pages: 5 Words: 1375

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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. The file Phone contains 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:
Central office | Time to Clear Problems (Minutes)

Central office | Time to Clear Problems (Minutes)

a. Is there evidence of a difference in the median time to clear problems between offices? (Use ? = 0.05.)
b. What assumptions must you make in (a)?