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The owner of a fish market finds that the mean weight for a catfish is 3.2...

The owner of a fish market finds that the mean weight for a catfish is 3.2 pounds with a standard deviation of 0.8 pounds. Assume that the weights of the catfish are normally distributed.
You buy a sample of 25 catfish. What is the probability that the mean weight of the 25 catfish is
less than 3 pounds?

math   Statistics-And-Probability   
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