Question: errence wants to test if the new machine on the production line is cutting the boards an average of 840 inches long as it is

errence wants to test if the new machine on the production line is cutting the boards an average of 840 inches long as it is supposed to.He takes a random sample of 240 boards and finds that the sample an average length of 850 inches. You conduct a test of significance using simulation and you get the following null distribution.

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