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Suppose a team of biologists has been studying a group of trout. This team has determined...

Suppose a team of biologists has been studying a group of trout. This team has determined that the lengths of the trout are normally distributed with a mean of 10.7 inches and a standard deviation of 1.2 inches.

a) If one trout is selected at random, what is the probability that its length will be between 7.5 and 8.2 inches?

b) If eight trout are selected at random, what is the probability that their mean length will be less than 11.3 inches?

Math   Statistics-And-Probability   
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