. Hypothetically, suppose a college student's apartment is to be kept at 70 degrees Fahrenheit but is allowed to deviate (standard deviation) by 1 degree in either direction. It suspected that, as a cost saving measure, the temperature was secretly set lower over the winter months. You devise a formal way to test your hypothesis. A sample of five days had a mean temperature of 67.4 Fahrenheit. Test to see if the thermostat was potentially secretly set lower.

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