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In order to monitor ecological health of Florida Everglades, many measurements are recorded at different times.  The bottom temperatures are recorded at Garfield Bight station and mean of 30.4ºC is obtained for 61 temperatures recorded on 61 different days. Supposing that s = 1.7ºC, test the claim that the population mean is greater than 30.0ºC.  Use a 0.05 significance level. (Employ classical approach)

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