Define observational study and experiment. Define the terms ...

[lak]

Define observational study and experiment. Define the terms treatment group and control group as part of your answer.
 
  What will be an ideal response?

Question 2

Suppose that two balanced dice, a red die and a green die, are rolled. Let Y denote the value of where G represents the number on the green die and R represents the number on the red die. What are the possible values of the random variable Y?
 
  A) 0, 1, 2, 3, 4, 5 B) 0, 1, 2, 3, 4, 5, 6
  C) -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5 D) -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6

[epscape]

Answer to Question 1

In an observational study, we observe and measure specific characteristics, but we don't attempt to manipulate or modify the subjects being studied. In an experiment we apply some treatment and then proceed to observe its effects on the subjects. In the experiment, the group receiving the treatment is called the treatment group. The control group is the group that is not given the treatment.

Answer to Question 2

C

[lak]

Excellent

[nguyenhoanhat]

TYSM