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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. 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. Complete (a) through (d) below. Click here to view the sample times. a. Assuming that the population variances from both offices are equal, is there evidence of a difference in the mean waiting times between the two offices? (Use a = 0.05.) Inco Let uly be the mean waiting time of the first office and 2 be the mean waiting time of the second office. Determine the hypotheses. Choose the correct answer below. O A. Ho: H1 2H2 OB. HO: H1 # H2 Hy: H1

H2 Determine the test statistic The value of the test statistic is |(Round to 4 decimal places as needed.) Determine the critical value(s). (Use a comma to separate answers as needed. Round to four decimal places as needed.) Choose the correct conclusion below