For the clinical trials of a weight loss drug containing Garcinia cambogia the subjects were randomly divided into two groups. The first received an inert pill along
with an exercise and diet plan, while the second received the test medicine along with
the same exercise and diet plan. The patients do not know which group they are in, nor
do the fitness and nutrition advisors.
a. Which is the treatment group?
b. Which is the control group (if there is one)?
c. Is this study blind, double-blind, or neither?
d. Is this best described as an experiment, a controlled experiment, or a placebo
controlled experiment?

The correct answer is -

a. the second group that receives test medicine

b. the first group that receives an inert pill

c. double-blind

d. placebo-controlled experiment

Step-by-step explanation:

a. The treatment group is the group that is used to test the experiment or change and receives the desire independent variable which is the second group that receives the test medicine along with an exercise and diet plan.

b. The control group is the group that is placed in ideal condition and receives no change other than placebo, here, the first group receives an inert pill along with the same exercise and diet plan.

c. Here neither the patients nor the fitness and nutrition advisors know which one is the control group and which one is the treatment group so ts a double-blind group.

d. This is best described as a placebo-controlled experiment due to the fact that there is a control group in this experiment that receives a placebo and another group that receives the treatment.

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.