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    Sample size

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    A study of elephants wishes to determine the average weight of a certain type of elephant. The standard deviation of the population is 500 pounds. How many elephants need to be weighed so find we can be 95% confident to be accurate within 300 pounds?

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    https://brainmass.com/statistics/sampling/sample-size-157362

    Solution Summary

    This solution shows how to find the appropriate sample size for the desired confidence interval.

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