Which of the Following Yields a Simple Random Sample

question 135

Multiple Choice

Which of the following yields a simple random sample?

• A)All students in a class are grouped according to their gender.A random sample of 8 is selected from the males and a separate random sample of 7 is drawn from the females.
• B)The best 15 students,according to the opinion of the instructor,in a class are selected.
• C)The names of 50 students in a class are written on 50 different pieces of paper and put in a hat.The first 15 pieces of paper are selected blindly one at a time after shuffling the papers thoroughly and each of the selected pieces is placed back into the hat before the next piece is selected.
• D)All students in a class are divided into groups according to the rows that they are seated.One of the groups is randomly selected.

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Definitions:

Ciliary Muscle

A ring-shaped muscle in the eye that changes the shape of the lens to focus on near or distant objects.

Visual Accommodation

Process of making adjustments to lens shape so light from an object falls on the retina.

Lens

A piece of glass or other transparent material shaped to converge or diverge transmitted light and form an image.

Human Skin

The body’s outer covering, which protects against heat, sunlight, injury, and infection while regulating body temperature and storing water, fat, and vitamin D.