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Mathematics, 07.06.2020 01:59 tyrique86
In 2000, the average duration of long-distance telephone calls originating in one town was 9.4 minutes. Five years later, in 2005, a long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long dash distance phone calls has changed from the 2000 mean of 9.4 minutes. The hypotheses are: Upper H 0 : mu equals 9.4 minutes Upper H Subscript a Baseline : mu not equals 9.4 minutes where mu is the mean duration, in 2005, of long-distance telephone calls originating in the town. Explain the meaning of a correct decision.
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