2. In a toy car manufacturing company, the weights of the to},r cars follow a normal distribution with a mean of 15 grams and a stande deviation of 0.5 grams. [6 marks] a) What is the probability that a to}r car randomlyr picked from the entire production weighs at most 14.3 grams? b) Determine the minimum weight of the heaviest 5% of all to},r cars produced. c) If 233% of the to}r cars of the entire production weigh at least 1575 grams, how man},r cars have been produced