QUESTION 3 In an effort to reduce energy costs, a major university has installed more efficient lights as well as automatic sensors that turn the lights off when no movement is present in a room. Historically, the cost of lighting an average classroom for 1 week has been $265. To determine whether the changes have signficantly reduced costs, the university takes a sample of 50 classrooms. They find that the average cost for 1 week is $247 with a standard deviation of $60. When testing whether the average energy use has decreased from the past (with a null hypothesis that the use has increased) (using the 5% level of significance), what is the p-value? (please round your answer to 4 decimal places)
QUESTION 3
In an effort to reduce energy costs, a major university has installed more efficient lights as well as automatic sensors that turn the lights off when no movement is present in a room. Historically, the cost of lighting an average classroom for 1 week has been $265. To determine whether the changes have signficantly reduced costs, the university takes a sample of 50 classrooms. They find that the average cost for 1 week is $247 with a standard deviation of $60. When testing whether the average energy use has decreased from the past (with a null hypothesis that the use has increased) (using the 5% level of significance), what is the p-value? (please round your answer to 4 decimal places)
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