The weight of an organ in adult males has a bell-shaped distribution with a mean of 340 grams and a standard
deviation of 35 grams. Use the empirical rule to determine the following.
(a) About 68% of organs will be between what weights?
(b) What percentage of organs weighs between 235 grams and 445 grams?
(c) What percentage of organs weighs less than 235 grams or more than 445 grams?
(d) What percentage of organs weighs between 270 grams and 375 grams?