Chapter 9 - Section 9.3 - Assess Your Understanding - Vocabulary and Skill Building - Page 459: 8

$χ2_{0.995} = 3.565$ $χ2_{0.025} = 29.819$

n = 14, df = n-1 = 13, Confidence level 99% α = 1 - 0.99 = 0.01 α/2 = 0.005, 1 - α/2 = 0.995 Using table-VII of the book we have: $χ2_{1-α/2} = χ2_{0.995} = 3.565$ $χ2_{α/2} = χ2_{0.025} = 29.819$