The Owner of a Meat Market Has an Assistant Who

Multiple Choice

The owner of a meat market has an assistant who has determined that the weights of roasts are normally distributed,with a mean of 3.2 pounds and standard deviation of 0.8 pounds.If a sample of 25 roasts yields a mean of 3.6 pounds,what is the Z-score for this sample mean?

A) -2.50
B) 2.50
C) -0.50
D) None of these choices.