Which of the Following Yields a Simple Random Sample

question 4

Multiple Choice

Which of the following yields a simple random sample?

• A)All students in a class are divided into groups of 15.One student is randomly chosen from the 1st group,the remaining observations are every 15th student thereafter.
• 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 without replacing them back in the hat after shuffling the papers thoroughly.
• 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.