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A state Department of Transportation claims that the mean wait time for various services at its different location is more than 6 minutes. A random
A state Department of Transportation claims that the mean wait time for various services at its different location is more than 6 minutes. A random sample of 16 services at different locations has a mean wait time of 9.5 minutes and a standard deviation of 7.3 minutes. At =0.05, can the department's claim be supported assuming the population is normally distributed?
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