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Mathematics, 02.03.2021 21:50 lillybritn
Is there convincing evidence at the a = 0.05 significance level that the true mean service time during the early morning shift is less than 4 minutes? The manager of a fast-food restaurant wants to be sure that, on average, customers are served within 4 minutes from the time the order is placed. He is particularly concerned about the staff working during the early morning shift. From a random sample of 41 orders, the mean time was 3.75 minutes with a standard deviation of 1.2 minutes.
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Is there convincing evidence at the a = 0.05 significance level that the true mean service time duri...
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