(Solution Library) The Metropolitan Bus Company claims that the mean waiting time for a bus during rush hour is less than 7 minutes. A random sample of 20
Question: The Metropolitan Bus Company claims that the mean waiting time for a bus during
rush hour is less than 7 minutes. A random sample of 20 waiting times has a mean of 5.2
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.
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