Devore loves problems that ask for the 95th percentile of a non-standard distribution or probability over an interval.
Example C — Confidence interval for mean (σ unknown) Problem (representative): n=10, sample mean X̄ = 12.3, sample sd s = 2.1. 95% CI for μ. Solution outline: Devore loves problems that ask for the 95th
The 8th edition places a significant emphasis on the use of computational tools and tables. The solutions manual clarifies how to use statistical tables (z-tables, t-tables, chi-square tables) correctly, which is often a source of confusion for beginners. It bridges the gap between the raw data provided in the problem and the critical values needed for hypothesis testing. sample mean X̄ = 12.3