[Solved] \[\text { If random variables } x _ { 1 } \text { and } x _ { 2 } \text { are independent, then } \sigma _ { x _ { 1 } + x _ { 2 } } ^ { 2 } = \sigma _ { x _ { 1 } } ^ { 2 } + \sigma _ { x _ { 2 } } ^ { 2 }\] 1971: This is not a key term in the context of a definition. Mechanical Calculator: A device used to perform automatic mathematical operations, developed before the advent of electronic calculators. Astronomical Tables: Charts or tables that present the positions of celestial bodies at various times, used for navigation, astrology, and astronomy. Steam-powered: Refers to machines or vehicles that operate using the power generated by steam, historically significant in the industrial revolution for powering locomotives, ships, and factories.

Solved

question 21

True/False

$\text { If random variables } x _ { 1 } \text { and } x _ { 2 } \text { are independent, then } \sigma _ { x _ { 1 } + x _ { 2 } } ^ { 2 } = \sigma _ { x _ { 1 } } ^ { 2 } + \sigma _ { x _ { 2 } } ^ { 2 }$

Definitions:

1971

This is not a key term in the context of a definition.

Mechanical Calculator

A device used to perform automatic mathematical operations, developed before the advent of electronic calculators.

Astronomical Tables

Charts or tables that present the positions of celestial bodies at various times, used for navigation, astrology, and astronomy.

Steam-powered

Refers to machines or vehicles that operate using the power generated by steam, historically significant in the industrial revolution for powering locomotives, ships, and factories.