An experiment was designed to test whether students could squeeze a clothespin more times in
minute
after resting or after exercising. What would be a hypothesis for the experiment?
(1) Do students squeeze clothespins more often in
minute after exercising?
(2) Can most students squeeze a clothespin more times after they rest?
(3) Ten students who exercise before squeezing a clothespin squeezed it more times in
minute than ten
students who rested first.
(4) Students who rest before squeezing a clothespin will squeeze it fewer times in
minute than
students who exercise beforehand.