STAT 515 Homework 4B McClave & Sincich exercises: 8.3, 8.12, 8.38, 8.42, 8.54, 8.57(a,b,d), 8.58(b), 8.66, 8.74, 8.87(a), 8.95, 9.58, 9.64(a). HINT: For 8.58, s = 2.041.