Sports Illustrated planned to ask a random sample of Division I college athletes, Do you believe performance-enhancing drugs are a problem in college sports? How many athletes must be interviewed to estimate the proportion concerned about use of drugs within 2% with 90% confidence? (a) 17 (c) 1680 (e) 2401 (b) 21 (d) 1702

Statistics Week 4 Aids to the Interpretation of Box Plots 1. The line (median) inside the box represents the “center” of the distribution of data. S= {1, 3, 5, 6, 10, 12, 68} Median: 6 Q U : 12 QL : 3 *IQR= Inner Quartile Range= QU−Q L 2. Examine the length of the box. The IQR is a measure of the sample’s variability and is especially...