A company wants to study the effectiveness of a new pain relief medicine. They recruit 100 100100 volunteers who suffer chronic pain. Half of the 50 5050 males are randomly assigned to the treatment group, and the other half are assigned to the control group. The same method is used to randomly assign half of the 50 5050 females to the treatment group and the other half to the control group. What type of experiment design is this?

Randomized Control Trial (RCT)

Explanation:

A Randomized Control Trial (RCT) study is a type of scientific study method, especially used in medical studies, where the subjects of the study are randomly assigned to two groups (Test and control groups). The test groups receive a medical intervention whose effect is to be studied, while the control group receives a placebo (a substance that is inert and has no therapeutic value). Notably in this study design is that apart from the medical intervention of interest, every other variable such as age, sex, race, etc. is controlled (the same across all the groups), to reduce the occurrence of biases, and this is to ensure that the difference in the outcomes between the test and control groups are as a result of the variable of interest alone. Randomization is also critical because it helps reduce recruitment bias and mimics natural occurrence as much as possible.

answer:

(b)

explanation: