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Managerial statistics: The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with mean of

Managerial statistics: The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with mean of 3.2 pounds and standard deviation of 0.8 pound. What percentage of samples of 4 fish will have sample means between 3.0 and 4.0 pounds? Please show work. Thank you

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