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:

Sterile Cups/Basins

Containers used in medical settings for holding liquids and objects, which are sterilized to prevent contamination.

Sterile Field

An area made free of all microorganisms to prevent infection during surgical procedures or other sterile medical processes.

Medical Asepsis

Practices aimed at reducing the number and transfer of pathogens, as well as preventing infection, primarily through cleanliness and sterilization techniques.

Hand Washing

The act of cleaning hands with water and soap or hand sanitizer to remove germs, dirt, and other harmful substances.