Big chickens:The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1446 grams and standard deviation 180grams. Use the TI-84 Plus calculator to answer the following.

(a) What proportion of broilers weigh between

1185 and 1286 grams?

(b) What is the probability that a randomly selected broiler weighs more than 1551 grams?

(c) Is it unusual for a broiler to weigh more than

1800 grams? Round the answers to at least four decimal places.