APPLICATIONS 6.18 Ground Beef The roeat department at a local supermarket specifically prepares its "I-kilogram packages of ground beef so there will be a variety of weights, some slightly and some slightly less than I kilogram (kg). Sv:ose that the weights of these "I-kilogram" are normally distrib_ uted with a mean of 1 kg an; standard deviation of 0.15 kg. a. What proportion of the packages will weigh more than I kg? b. What proportion of the packages will weigh between 0.95 and 1.05 kg? c. What is the probability that a randomly selected package of ground beef will weigh less than 0.80 kg? . Would it be unusual to find a package of ground beef that weighs 1.45 kg? How would you explain such a large package?