question 21

True/False

$$\text { The sample mean difference } \bar { d } \text { is equal to the difference of the sample means } \bar { x } _ { 1 } - \bar { x } _ { 2 } \text {. }$$

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Definitions:

Hadrian

A Roman Emperor known for his substantial building projects throughout the Roman Empire, including Hadrian's Wall in Britain.

Augustus

The first Roman emperor, ruling from 27 B.C. until his death in A.D. 14, and known for initiating the Pax Romana, a period of relative peace in the Roman Empire.

Greek Post-and-Lintel

A building system using two vertical posts supporting a horizontal beam (lintel), characteristic of ancient Greek architecture and foundational in Western architectural tradition.

Colosseum

An iconic ancient amphitheater in Rome, known for its vast size and for hosting gladiatorial combats, spectacles, and public entertainments.