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Mathematics, 11.03.2020 23:26 KieraKimball

The amount of natural gas that flows through a transmission line is measured in pounds of pressure. Assume that the average amount of natural gas in a 16-inch transmission main is supposed to be approximately 625 pounds per square inch. Past studies have suggested that this average varies by a standard deviation of 70 pounds per square inch. What is the probability that the Federal Energy Regulatory Commission (FERC) will randomly test a line and find the pressure to be less than 650 pounds? What is the probability that it is at most 640 pounds per square inch

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