Arestaurant decides to test their oven's thermostat to see if it is working properly, that is, if the actual temperature inside the oven is the same as the temperature to which the thermostat was set. twenty times, the oven was set at 350 degrees and then the temperature was measured with a thermometer. the chef wants to know if the average oven temperature is different from 350, when the thermostat is set at 350. what is the correct null and alternative hypothesis for this test?
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