Test bus companies claim, A bus company claims that the

Test bus companies claim

Reference no: EM13112233

A bus company claims that the mean waiting time for a bus during rush hour in 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 a= 0.01, test the bus companies claim. Assume the distribution is normally distributed. Include curve. Write conclusion where a layman can understand.

Reference no: EM13112233

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