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.