A boat capsized and sank in a lake. Based on an assumption of a mean weight of 136 lb, the boat was rated to carry 50 passengers (so the load limit was 6,800 lb). After the boat sank, the assumed mean weight for similar boats was changed from 136 lb to 172 lb. Complete parts a and b below. a. Assume that a similar boat is loaded with 50 passengers, and assume that the weights of people are normally distributed with a mean of 182.2 lb and a standard deviation of 37.1 lb. Find the probability that the boat is overloaded because the 50 passengers have a mean weight greater than 136 lb. The probability is (Round to four decimal places as needed.) b. The boat was later rated to carry only 17 passengers, and the load limit was changed to 2,924 lb. Find the probability that the boat is overloaded because the mean weight of the passengers is greater than 172 (so that their total weight is greater than the maximum capacity of 2,924 lb). The probability is (Round to four decimal places as needed.) Do the new ratings appear to be safe when the boat is loaded with 17 passengers? Choose the correct answer below. OA. Because there is a high probability of overloading, the new ratings do not appear to be safe when the boat is loaded with 17 passengers. OB. Because there is a high probability of overloading, the new ratings appear to be safe when the boat is loaded with 17 passengers. OC. Because 182.2 is greater than 172, the new ratings do not appear to be safe when the boat is loaded with 17 passengers. OD. Because the probability of overloading is lower with the new ratings than with the old ratings, the new ratings appear to be safe.