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The lengths of Atlantic croaker fishes are normally distributed , with a mean of 10 inches and a standard deviation of 2 inches . An Atlantic...

1. The lengths of Atlantic croaker fishes are normally distributed , with a mean of 10 inches and a standard deviation of 2 inches . An Atlantic croaker fish is randomly selected.
a.  find the probability that the length of the fish is less than 7 inches.
b.  Find the probability that the length of the fish is between 7 and 15 inches

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