Big chickens: A report from a poultry industry news Web site stated that the weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1348 grams and standard deviation 171 grams. Use the TI-84 PLUS calculator and round your answers to at least two decimal places. (a) Find the 21" percentile of the weights. (b) Find the 83 percentile of the weights. (c) Find the second quartile of the weights. (d) A chicken farmer wants to provide a money-back guarantee that his broilers will weigh at least a certain amount. What weight should he guarantee so that he will have to give his customers' money back only 2% of the time? Part: 0 / 4 Part 1 of 4 Find the 21" percentile of the weights. The 21 percentile of the broiler weights is grams. X