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A beauty product company conducts a study to test the effectiveness of a new shampoo to control split ends. One hundred subjects have volunteered to take part in the study and will be divided into a treatment group and a placebo group. The study leader will assign the subjects to the groups randomly using slips of paper. Select each statement that could describe an appropriate step in the labeling process.

A. Write “treatment group” on 50 slips of paper and write “placebo group” on 50 slips of paper.

B. Number the subjects from 1 to 100, and write the numbers 1 to 100 on the slips of paper.

C. Write the name of each subject on a slip of paper.

D. Write random one-digit numbers on 100 slips of paper.

E. Use color-coding to distinguish the treatment group from the placebo group.

Sagot :

The statements that could describe an appropriate step in the labeling process are;

  • A. Write “treatment group” on 50 slips of paper and write “placebo group” on 50 slips of paper.
  • B. Number the subjects from 1 to 100, and write the numbers 1 to 100 on the slips of paper.
  • C. Write the name of each subject on a slip of paper.

  • What is being done in the question is a type of random sampling where the population is divided into different groups and assigned treatments.
  • Now, we are told that the groups are treatment group and a placebo group.

  • Since the leader assigns the 100 subjects to the groups randomly using slips of paper, it means the first step is to write treatment group on 50 of the slips of paper and write placebo group on another 50 slips of paper.

  • Then the next step will be to number the slips from 1 to 100 to make sure that it is complete and everyone has a unique number.

  • The third step is to write the name of each of the subject on each other the paper so that there will be no mixture.

Read more about stratified random sampling at; https://brainly.com/question/1954758

Answer:

A, B, C,

Step-by-step explanation:

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