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The lengths of bluefin tuna are normally distributed with a mean of 2.25 meters and standard...

The lengths of bluefin tuna are normally distributed with a mean of 2.25 meters and standard deviation of 0.2 meters. If a fisherman catches 40 bluefin tuna during the month of March, what is the probability the average of these 40 tuna is greater than 2.4 meters?

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