Define a simulation to represent correct answers on a true-or-false quiz. Use the simulation to find the probability of getting exactly 4 correct answers on a ten-question quiz.

A steel cylinder with a moveable piston on top is filled with helium (He) gas. The force that the piston exerts on the gas is constant, but the volume inside the cylinder doubles, pushing the piston up.

Which of the following answers correctly states the cause for the change described in the scenario?

The temperature increased. The density of the helium atoms decreased. The pressure decreased. The helium atoms increased in size.