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Mathematics, 31.07.2019 03:20, shealene7
The metropolitan bus company claims that the mean waiting time for a bus during rush hour is less than 5 minutes. a random sample of 20 waiting times has a mean of 3.7 minutes with a standard deviation of 2.1 minutes. at α = 0.01, test the bus company’s claim. assume the distribution is normally distributed. state the sample mean and the standard deviation
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