Dz = E(z - Ez)² = Ez² - E²z
Ez = ∫ x * x³ dx = 1/5
Ez² = ∫ x² * x³ dx = 1/6
Dz = 1/6 - 1/25 = 19/150
√Dz = √(19/150)
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Dz = E(z - Ez)² = Ez² - E²z
Ez = ∫ x * x³ dx = 1/5
Ez² = ∫ x² * x³ dx = 1/6
Dz = 1/6 - 1/25 = 19/150
√Dz = √(19/150)