Luis is an avid baseball player. For his science project, he decides to test which type of bat
is best for hitting home runs. Luis prefers to use an aluminum bat when he plays, so he
hypothesizes that he will hit more home runs using an aluminum bat than a wooden bat.
During batting practice, he tests his hypothesis. He hits a baseball with a wooden bat and
it lands near first base. He swings the aluminum bat with all his might and the ball sails
over the back fence. He concludes that the data supports his hypothesis.
Which of the following statements reveals Luis’ experimental bias
A. He swings the aluminum bat with all his might.
B. He will hit more home runs using an aluminum bat than a wooden bat.
C. Luis is an avid baseball player.
D. He hits a baseball with a wooden bat and it lands near first base.
A, but anyway, the sample of 2 hits is too small.
The statement that reveals Luis' experimental bias is A. He swings the aluminum bat with all his might.
This statement indicates that Luis put in more effort and force when using the aluminum bat compared to the wooden bat. By swinging the aluminum bat with all his might, he intentionally gave it more power and force, which may have influenced the outcome of hitting a home run. This bias could potentially favor the aluminum bat and affect the validity of his conclusion.