The mean weight of trucks traveling on a particular section

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The mean weight of trucks traveling on a particular section of I-480 is not known. A state highway inspector needs an estimate of the mean. He selects a random sample of 49 trucks passing the weighing station and finds a mean of 15.8 tons, with a standard deviation of the sample of 4.2 tons. What is the probability that a truck will weigh less than 14.3 tons?

Reference no: EM13637771

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