Simplify the Expression Without a Calculator $\sqrt { ( 7 - ( - 5 ) ) ^ { 2 } + ( - 4 - 1 ) ^ { 2 } }$

question 43

Multiple Choice

Simplify the expression without a calculator. $\sqrt { ( 7 - ( - 5 ) ) ^ { 2 } + ( - 4 - 1 ) ^ { 2 } }$

• A) 13
• B) 14
• C) 15
• D) 10
• E) 9

Understand the historical and current medical uses of ephedrine.

Recognize the controversies and research findings related to methylphenidate use.

Understand various collective behaviour theories including contagion, emergent norm, and convergence theories.

Recognize the role of rumours, gossip, and urban legends in shaping social narratives.

---

Definitions:

T Test

An analytical technique comparing the averages of two groups to ascertain if their differences are statistically significant.

Independent Samples

Two or more groups of samples that are collected from populations that do not overlap, implying no participant appears in more than one group.

Effect Size

A measure that quantifies the strength of the relationship between two variables.

Null Hypothesis

A statement suggesting that there is no significant effect or difference in a given population, serving as a starting assumption for statistical significance testing.