The mean is 15.8 tons. the sample standard deviation is 5.0, Ask an Expert

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The mean weight of trucks traveling on a particular section of i-475 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 the mean is 15.8 tons. the sample standard deviation is 5.0 tons. what is the 95 percent interval for the population mean?

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