The Crossett Trucking Company claims that the mean mass of its delivery trucks when they are fully

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The Crossett Trucking Company claims that the mean mass of its delivery trucks when they are fully loaded is 2700 kg and the standard deviation is 68 kg. Assume that the population follows the normal distribution. Forty trucks are randomly selected and their masses measured. Within what limits will 95% of the sample means occur?

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Basic Statistics For Business & Economics

ISBN: 9781259268939

6th Canadian Edition

Authors: Douglas A. Lind, William G Marchal, Samuel A. Wathen, Carol Ann Waite

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