The weights of a certain dog breed are approximately normally distributed with a mean of 54 pounds, and a standard deviation of 6.1 pounds. Use your graphing calculator to answer the following questions. Write your answers in percent form. Round your answers to the nearest tenth of a percent. a) Find the percentage of dogs of this breed that weigh less than 54 pounds. % b) Find the percentage of dogs of this breed that weigh less than 50 pounds. % c) Find the percentage of dogs of this breed that weigh more than 50 pounds.