What is the probability that a single fishermans catch is, Ask an Expert

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A survey of 350 lobster fisherman found that they catch an average of 32 pounds of lobster per day with a standard deviation of four pounds. if a random sample of 30 lobster fisherman is selected.

A) what is the probability that a single fisherman's catch is less than 31.5 pounds?

B) what is the probability that the sample of 30 fisherman's average catch is less than 31.5 pounds?

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