The height of the weeds growing in a field are normally distributed with a mean of 25 feet and a sta

The height of the weeds growing in a field are normally distributed with a mean of 25 feet and a standard deviation of 16 feet

a Find the probability that a randomly selected weed is over 3 feet tall

b Find the probability that among 38 randomly selected plans, that their mean height is over 3 feet tall

c Find P 1, the height separating the shortest 15 % of the plants from the rest