A water taxi sank in Baltimore's inner harbor. Assume the weights of men are normally distributed with a mean of 172 lbs and a standard deviation of 29 lb. find the probability that 20 randomly selected men will have a mean weight that is greater than 175lb.
according to
h ttps://davidmlane.com/normal.html
(delete the space at the front)
the prob that a person has a weight of more than 175 lb is
.4588
I think you are missing some data.