What Number Decreased by 630 Equals 1,510

question 48

Multiple Choice

What number decreased by 630 equals 1,510?

• A)880
• B)2,140
• C)4,120
• D)1,240
• E)None of these

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Definitions:

Artificial Situation

A controlled environment or scenario often created in experiments or simulations to study behavior or responses under specific conditions.

Hypothesized Causes

Proposed explanations or factors believed to potentially explain certain phenomena or outcomes.

Random Sample

A selection technique where participants are chosen randomly from a larger population, ensuring that every individual has an equal chance of being included in the sample, used to gather unbiased data.

Randomization

The process of making something random; in experimental design, it is the practice of assigning trial subjects randomly to treatment or control groups to prevent bias.