A Random Sample of Size 36 Is Taken from a Population

question 136

Multiple Choice

A random sample of size 36 is taken from a population with mean µ = 17 and standard deviation σ = 6. The probability that the sample mean is greater than 18 is ________.

• A) 0.1587
• B) 0.4325
• C) 0.5675
• D) 0.8413

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Definitions:

Structure

The arrangement of and relations between the parts or elements of something complex.

Vapor

Gaseous phase of a substance that is generally a liquid or solid at room temperature.

Solute

A substance dissolved in another substance, typically the component of a solution present in the lesser amount.

Solvent

A substance that dissolves a solute, resulting in a solution; solvents are often liquids but can also be solid or gas.