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A wildlife service wishes to estimate the mean number of days of hunting per hunter for...

A wildlife service wishes to estimate the mean number of days of hunting per hunter for all hunters licensed in the state during a given season. What minimum number of hunters must be included in the sample in order to estimate the mean with a bound on the error of estimation equal to 3 hunting days with probability 0.95? Assume that data collected in earlier surveys have shown σ to be approximately equal to 11. (Round your answer up to the nearest whole number.)

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