The Principal of a Small Elementary School Wants to Select

question 505

Multiple Choice

The principal of a small elementary school wants to select a simple random sample of 24 students.
The school has 12 classrooms with 18 students in each class. She decides to randomly select two
Students from each classroom. Is this a simple random sample?

• A) No, because not all combinations of 24 students could have been chosen.
• B) Yes, because each student had an equal chance to be selected.
• C) No, because each student did not have an equal chance of being selected.
• D) Yes, because a stratified sample is a type of simple random sample.
• E) Yes, because the students were selected at random.

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Definitions:

Structure Labeled

A term probably meant to describe a diagram or illustration where specific parts have been marked and named to indicate their identity or function.

Function

The specific role or activity of an organ, structure, or substance in an organism or system.

Veliger Larval

A stage in the development of some mollusks, characterized by the presence of a ciliated swimming organ and the beginnings of the foot, shell, and mantle.

Unique

Having a distinct characteristic, quality, or identity that makes something strictly one of a kind.