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A problem with a phone line that prevents a customer from receiving or making calls is upsetting to both the customer and the telecommunications company. The file Phone contains samples of 20 problems reported to two different of offices of a telecommunications company and the little to clear these problems (in minutes) from the customers’ lines:
Central Office 1 Time to Clear Problems (minutes)
Central Office II 11 Time to Clear Problems (minutes)
a. Assuming that the population variances from both offices an: equal, is there evidence of a difference in the
b. Find the p-value in (a) and interpret its meaning.
c. What other assumption is necessary in (a)?
d. Assuming that the population variances from both offices are equal. construct and interpret a
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Chapter 10 Solutions
Basic Business Statistics, Student Value Edition (13th Edition)
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