The 90% Confidence Interval Estimate of a Population Standard Deviation

question 24

Multiple Choice

The 90% confidence interval estimate of a population standard deviation when a sample variance of 50 is obtained from a sample of 15 items is

• A) 26.8 to 124.356.
• B) 5.177 to 11.152.
• C) 5.436 to 10.321.
• D) 29.555 to 106.529.

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Definitions:

Density of Water

The mass per unit volume of water, approximately 1 gram per cubic centimeter (1 g/cm³) at standard temperature and pressure.

Ice Melting

The physical process by which ice transitions to liquid water as it absorbs heat from its surroundings, typically occurring at 0 degrees Celsius under standard atmospheric pressure.

Density

The mass per unit volume of a substance, often used as an identifying property of various materials.

Mass

A measure of the amount of matter that an object contains; also a fundamental property of an object that determines its inertia and gravitational interaction.