Listed below are recorded speeds (in mi h) of randomly selected cars traveling on a section of Highway 405 in Los Angeles (based on data from Sigalert). That part of the highway has a posted speed limit of 65 mi h. Assume that the standard deviation of speeds is 5.7 mi h and use a 0.01 significance level to test the claim that the sample is from a population with a mean that is greater than 65 mi/h.

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