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help please c. An experimenter wanted to measure the true variability a: of the gasoline consumption of an experimental engine. In 16 test mm the

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help please

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c. An experimenter wanted to measure the true variability a: of the gasoline consumption of an experimental engine. In 16 test mm the gasoline conaumption of the engine had a mean and standard deviation of 76.40 and 2.2 liters respectively. Obtain 99% condence interval for 0'2 . [5 marks]

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