Which of the following describes the benefit of using control in this experiment?
A company that manufactures golf balls produces a
new type of ball that is supposed to travel significantly
farther than the company's previous golf ball. To
determine this, 40 new-style golf balls and 40 original-
style golf balls are randomly selected from the
company's production line on a specific day. The balls
are then placed in a bag and shaken. A golf pro then
selects a ball and hits it using a driver. The distance
the ball travels is then measured. The bag is shaken
again, and the golf pro selects another ball and hits it
with the same driver. He continues this procedure until
all 80 of the golf balls are hit.
Controlling the type of golf club used and having the
same golf pro hit the ball eliminates the need to have
a control group.
Controlling the type of golf club used and having the
same golf pro hit the ball that may influence the
response variable eliminates variability in the
response variable.
Controlling the type of golf club used and having the
same golf pro hit the ball that may influence the
response variable reduces variability in the response
variable.
Controlling the type of golf club used and having the
same golf pro hit the ball means the differences
observed in the response variable can be attributed
to those yariahler that