est 8C AP Statistics Name:
Directions: Work on these sheets.
Part 1: Multiple Choice. Circle the letter corresponding to the best answer.
1. 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 more than 6 contaminated chickens?
(a)0.961 (12, +30) |
¿e a
(e)0079
2. 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 — agpro quina e Y
(a) (90, 510) ag npz 1000(. 4) = 900
290.8, 309.2 7 |
6. 730) ) Op = (AOE = | 7000(307) 4 ZO
<a)Q71,329)
(e) (255, 345)