The united states' coast guard assumed the mean weight of passengers in commercial boats is 185pounds. the previous value wad lower, but was raised after a tragic boating accident. the standard deviation of passenger weight is 26.7pounds. the weight of a random sample of 48 commercial boat passengers were recorded. the sample mean ead determined to be 177.6 pounds. find the probability that a random sample of passengers will have a mean weight that isad extreme or more extreme