a big is a full of candies and the following data is provided: the lower specification limit is 48 pound and upper specification limit is 56 pound, the population mean weight of the candy bag is 50 pound with a standard deviation of 1.75 pound. (normal distribution exist) (8pts) a) what percentage of the bag contain less than 48 pound? (4 pts) b) what would be average weight of the bag if we desire 4% of the bag to be below 48 pound (4 pts)