0.. AP Statistics Review: Chapter 2 Assuming that batting averages have a bell-shaped distribution, arrange in ascending order: I. A batting average with a 2-score of l 11. A batting average with a percentile rank of 20% III. A batting average at the rst quartile a. 1,11,111 b. 111,1,11 c. 11,1,111 d. 11, 111,1 e. 111,11,1 Height, in meters, is measured for each person in a sample. After the data are collected, all the height measurements are converted from meters to centimeters by multiplying each measurement by 100. Which of the following statistics will remain the same for both the original data set and the transformed data set? The mean of the height measurements The median of the height measurements The standard deviation of the height measurements The maximum of the height measurements The z-scores of the height measurements {DP-PETE\" A candy company produces individually wrapped candies. The quality control manager for the company believes that the weight of the candies is approximately Normally distributed with mean 720 milligrams. If the manager's belief is correct, which of the following intervals of weights will contain the largest proportion of the candies in the distribution of weights? a. 740 mg to 780 mg b. 700 mg to 740 mg c. 680 mg to 720 mg d. 660 mg to 700 mg e. 620 mg to 660 mg 20f7 AP Statistics 4 of 7 Review: Chapter 2 10. A study of elite distance runners found a mean body weight of 63.1 kilograms with a standard deviation of 4.8 kg. Using the empirical rule, the proportion of runners whose body weight is between 53.5 and 72.7 kg is approximately: a. 68% b. 75% c. 95% d. 99% e. 99.7% 11. Using the same data as above, approximately what proportion of runners have body weights below 60 kg? 15% b. 25% C. 45% d. 65% e. 75% 12. Using the same data as above, what is the 60" percentile of the distribution? a. 0.253 b. 0.842 C. 61.884 d. 64.316 e. 66.216 13. A distribution of scores is approximately Normal with a mean of 78 and a standard deviation of 8.6. Which of the following equations can be used to find the score above which 33 percent of the scores fall? 0.44 - *-78 (8.6) b. 0.67 = * x - 78 (8.6) C. 0.33= *-78 8.6 d. 0.44 = *-78 8.6 0.67 =*-78 8.6 AP Statistics0.. AP Statistics Review: Chapter 2 14. Robert owns two dogs named Gene and Boots. Gene's tail is 15 inches long and Boots\" tail is 8 15. 16. inches long. A dog's tail is classied as Irregular ifthe length is located in either the top 5% or bottom 5% of all tail lengths. The distribution of tail lengths is approximately normal with mean 9.5 inches and standard deviation 1.5 inches. Which of the following is the best description of Gene and Boots tails? Neither is considered Irregular Gene's is considered Irregular and Boots' is not Boot's is considered Irregular and Gene's is not Both are considered Irregular There is insufcent information to reach a conclusion EDP-PET!\" The distribution of the number of sh captured per day by a large shing net trap is approximately normal with mean 103. If 28 percent ofthe captures fall below 76 fish per day, which of the following is a good representation of a, the standard deviation of the distribution? QR) 0.28 \"'3\" 7'5 (H) U 28 : 76 [0.1 a / [03776 k9) 41.58 : "' 767106