Mathematics, 13.07.2021 19:40 queeneaf
Suppose you are working for a regional residential natural gas utility. For a sample of 90 customer visits, the staff time per reported gas leak has a mean of 206 minutes and standard deviation 32 minutes. The VP of network maintenance hypothesizes that the average staff time devoted to reported gas leaks is 216 minutes. At a 10 percent level of significance, what is the lower bound of the interval for determining whether to accept or reject the VP's hypothesis?
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Suppose you are working for a regional residential natural gas utility. For a sample of 90 customer...
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