A Sample of 100 Items Has a Population Standard Deviation

question 23

Multiple Choice

A sample of 100 items has a population standard deviation of 5.1 and a mean of 21.6. Construct a 95 percent confidence interval for μ.

• A) [11.60, 31.60]
• B) [21.16, 22.04]
• C) [20.60, 22.60]
• D) [20.76, 22.43]

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Definitions:

Hexane

A hydrocarbon compound with six carbon atoms and 14 hydrogen atoms, often used as a non-polar solvent.

Polarity

The property of having distinct and opposite charges or magnetic poles, leading to a molecule having regions with slightly positive and slightly negative charges.

Benzene

A colorless, volatile liquid hydrocarbon with a distinctive sweet smell, C6H6, used as a solvent and in the manufacture of various chemicals.

Hexane

A hydrocarbon with the chemical formula C6H14, used as a solvent in industrial applications, including the extraction of oils and fats.