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Mathematics, 24.04.2020 20:58 Kimbeeeerly7631

The average weight of semis traveling on a particular section of I-80 is not known. A state highway inspector needs an estimate of the mean. He selects a random sample of 49 semis passing the weighing station and finds the mean is 15.8 tons, with a standard deviation of the sample of 4.2 tons. What is probability that a semi will weigh less than 14.3 tons

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