The Distribution of Vitamin C Amount in the Vitamin Drops

Multiple Choice

The distribution of vitamin C amount in the vitamin drops produced by a given factory is approximately Normal, with a mean of 60.0 mg and a standard deviation of 0.5 mg. If you take a random sample of 25 vitamin drops, what is, approximately, the probability that the average vitamin content x̄ is less than 59.9 mg?

A) 0.16
B) 0.32
C) 0.42
D) 0.68