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. Which of the following describes the benefit of using control in this experiment?

A.) Controlling the type of golf club used and having the same golf pro hit the ball eliminates the need to have a control group.
B.) 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.
C.) 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.
D.) 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 variables that were controlled.

A

Step-by-step explanation: Acompany that manufactures golf = balls produces new type of ball that iS supposed tO travel significantly (arther than the company' s previous goll ball, To delermine this_ 40 new-style golf balls and 40 original-style golf = balls are randomly selected from the company's production line specific day: The balls are then placed In bag = and shaken: A golf pro Ihen selects ball and hits I. The dislance the ball travels is then measured. The bag is shaken again, and the goif pro selects another ball t0 hil. She continues this procedure until all 80 of the golf = balls are hil Has the principle of comparison been addressed in this experimental design? Yes because the balls are randomly selected, the dislances of the new ball can be compared t0 Ihe distances of the original ball: Yes, because the original ball type i5 included in this experiment;, the distances the different balls travel can be accurately compared. No; because placebo ball was not used, comparison cannot be made t0 determine if the new ball travels significantly farther: No; because all of the new type of balls are not hit first; the distances they travel cannot be compared t0 the distances of the original ball

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3