In a Sample of Size 40,the Sample Mean Is 15

question 75

Multiple Choice

In a sample of size 40,the sample mean is 15.What is the sum of all observations in the sample?

• A) Σ X_i = 200
• B) Σ X_i = 400
• C) Σ X_i = 600
• D) Σ X_i = 800

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Definitions:

Critical Thinking

The objective analysis and evaluation of an issue in order to form a judgment; involves questioning, analysis, synthesis, and reflection.

Cognitive Skills

Mental capabilities that involve processing information, understanding concepts, solving problems, and making decisions.

Inferences

The act of drawing conclusions based on evidence and reasoning rather than explicit statements.

Information Processing Theorist

An information processing theorist studies how human minds process and understand information, focusing on mechanisms like perception, memory, and problem-solving.