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A researcher claims the average Hotel Rate in San Diego CA is $156/night during the month of the November 2009.  You think this is low, and want to prove average rate is higher, so you randomly gather a sample of 25 data points from various hotels on random dates throughout that month.  You find out an average rate of 168 with a standard deviation of 30. Using the significance level a = .05, and supposing a normal distribution what does the evidence conclude?

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