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omework Question 9, 9.EOC.75-E HW Score: 39.99%, 3.6 of 9 points Part 1 of 7 Points: 0 of 1 Save One key metric for measuring overall call center performace is service level which is defined as the percentage of calls answered by a human agent within a specified number of seconds. The accompanying data are the times, in seconds, to answer 50 incoming calls to a financial services call center. Complete parts (a) through (d). Click the icon to view the answer time data. a. At the 0.10 level of significance, is there evidence that the population mean time to answer calls is less than 20 seconds? Determine the null and alternative hypotheses. Ho : H Hy : H X (Type integers or decimals. Do not round.) - Answer Time Data Print Done Clear all Check