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04-08-2007, 17:20
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 Statistics ? A factory's management team claim that the mean time that each of its factory's machines is idle per week is over 6 hours which is too high. the factory manager does not a gree with thins. when a random sample of 16 machines is observed, the mean weekly idle time was found to be 6.8 hours. from past experience it is possible to assume that the idle time of a machine during the week is normally distributed with a standard deviation of 2 hours. at teh 5% level of significance is the contention of the management justified? Can someone show me how to solve this form of problem
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Te gjitha oret jane ne GMT +1. Ora tani eshte 22:16.
