The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with mean of 2.8 pounds and standard deviation of 0.6 pound. If a sample of 36 fish yields a mean of 3.0 pounds, what is the Z-score for this distribution?

A.

2.00

B.

-2.00

C.

0.20

D.

0.33