Question: In a certain population of the herring Pomolobus aestivalis, the lengths of the individual fish follow a normal distribution. The mean length of the fish is 51.0 mm., and the standard deviation is 3.6 mm.

a) What percentage of the fish are less than 58 mm long?

b) What percentage of the fish are more than 54 mm long?

c) What percentage of the fish are between 58 and 60 mm long?

d) What lengths of fish include 95% of the population?