Requiz 9.1-9.3

Identify the population:

A survey of 500 adults in the U.S. found that 54% drink coffee daily.

• A. Collection of the 500 adults surveyed

• B. Collection of all adults in the U.S.

• C. 54%

• D. 500

Identify the sample:

A survey of 500 adults in the U.S. found that 54% drink coffee daily.

• A. Collection of the 500 adults surveyed

• B. Collection of all adults in the U.S.

• C. 54%

• D. 500

True or false:

In the statement “A survey of 500 adults in the U.S. found that 54% drink coffee daily” 54% is a parameter.

• A. TRUE

• B. FALSE

Identify the sampling technique used:

Students are classified according to major. Twenty students are selected from each major and asked how often they use the library.

• A. Random sample

• B. Stratified sample

• C. Cluster sample

• D. Systematic sample

Complete the definition:

A _______ is a subset of a population

• sample

• sampel

• people

• statistics

• group

Complete the definition:

A _________ consists of all subjects (human or otherwise) that are being studied

• Statistics

• Number

• People

• Population

• Pueblo

Population or Sample?

A factory overseer selects 40 threaded rods at random from those produced that week at the factory, then she tests their tensile strength.

• Population

• Sample

Population or Sample?

All of the teachers in a school are surveyed on their meeting time preferences.

• Population

• Sample

Is the given situation a parameter or statistic?

The average annual salary for 35 of a company's 1200 accountants is $68,000.

• parameter

• statistic

Is the given situation a parameter or statistic?

Sixty-two of the 97 passengers aboard the Hindenburg airship survived its explosion.

• parameter

• statistic