probability one

[rkain]

Can someone help?

The average number of pounds of meat a person consumes a year is 212.3 pounds. Assume that the standard deviation is 20 pounds. If a sample of 50 individuals is selected, find the probability that the mean of the sample will be less than 210 pounds per year.

[vinux]

Hint: Assume Normal distribution.
Find the distribution of sample mean
Then calculate the probability P( sample mean < 210)