Question

In: Statistics and Probability

A researcher wants to find out whether the compound NAD+ can act as an anti-aging pill....

A researcher wants to find out whether the compound NAD+ can act as an anti-aging pill.

a. What would the control group for this experiment be?

b. What is the purpose of a control group?

c. Paid volunteers are to be randomly assigned into either the treatment or control groups. What is the purpose of the random assignment?

Solutions

Expert Solution

Solution:

There are two types of groups in an experiment, and they are identical except that one receives a treatment ( compound NAD+ ) while the other does not. The first group that receives the treatment in an experiment is called the experimental group, while the other group that does not receive the treatment is called the control group. The control group provides a baseline that lets us see if the treatment has an effect.

a. Control group in this experiment would be one that does not receive the compound NAD+ or the treatments.

b. The control group provides a baseline that lets us see if the treatment has an effect. Control group are used in scientific experiments as a comparison to determine if there was any effect from treatment of the experimental group.

c.) The purpose of random assignment is that each participant has an equal probability of being placed in the experimental or control group. This helps ensure that there are no systematic differences between the groups before the treatment (e.g., the compound NAD+ or placebo) is given to the participants. This process helps ensure that the groups are equivalent at the beginning of the study, which makes it safer to assume the treatments caused any differences between groups that the experimenters observe at the end of the study

orchestra answered 1 year ago
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