how do i solve this explanations and formula please

Hmta >> TE 4 av 18 - + Automatisk zoom 3 D Problem 3 The weight of a randomly chosen apple from a large batch of Gala apples is assumed to be normally distributed with a mean of 200 grams and a standard deviation of 40 grams. Anna randomly chooses n = 9 apples from this batch at a grocery store. We assume that the individual weight of each apple is independent of the others. a) What is the probability that the total weight of her 9 apples is less than 2 kg? (5p) A. 0.500 B. 0.506 C. 0.711 D. 0.952 E 1.000 b) What is the probability that at most 5 of her n 9 apples individually weigh more than 200 grams? HINT: First you need to determine the probability P that an individual apple weighs more than 200 grams. (Sp) A. 0.254