A manufacturer of air conditioners seeks to ensure that their air conditioners are efficient enough that they will use no more than 2800 watt/hr under typical usage. The quality control department has tested a sample of 63 air conditioner units and found an average energy use of 7000 watts/hr. From previous tests, it can safely be assumed that the population standard deviation is 10000 watts/hr. Use the p-value approach and a 0.01 level of significance to test to see if the air conditioners are using too much energy.   What is the P value?

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