Assume that the amount of cereal in a box of a certain brand of cereal is normally distributed with a mean of 400 grams and a standard deviation of 10 grams. Since Pr(Y=400)=0, then find the probability that a randomly chosen box of this cereal contains exactly 400 grams using the continuity correction. The unit of measurement is one gram. Solution P(Y = 400) = P(399 < Y < 401) = 0.