The weight of an organ in adult males has a bell-shaped distribution with a mean of 350 grams and a standard deviation of 45 grams. Use the empirical rule to determine the following. (a) About 95% of organs will be between what weights? (b) What percentage of organs weighs between 305 grams and 395 grams? (c) What percentage of organs weighs less than 305 grams or more than 395 grams? (d) What percentage of organs weighs between 260 grams and 485 grams? and grams (Use ascending order.)