It has been estimated that about 30% of frozen chickens contain enough salmonella bacteria to cause illness if improperly cooked. A consumer purchases 12 frozen chickens. What is the probability that the consumer will have no more than 6 contaminated chickens?
(a) 0.961
(b) 0.118
(c) 0.882
(d) 0.039
(e) 0.079
Refer to the previous question. Suppose that a supermarket buys 1000 frozen chickens from a supplier. The number of frozen chickens that may be contaminated that are within two standard deviations of the mean is between A and B. The numbers A and B are
(a) (90,510)
(b) (290.8,309.2)
(c) (0,730)
(d) (271,329)
(e) (255,345)