What values would you enter into the One Proportion applet to run an analysis for Jerry?
a. Probability of heads _____________
b. Number of tosses _______________
c. Number of repetitions ____________
d. Use the applet to conduct the simulation study. If Jerry’s long-run proportion of getting his new first serve in is truly 50%, is 12 out of 20 a likely value? Is it unlikely? How are you deciding?

Jerry is a tennis player. He is working on a really tough first serve. While practicing his new tough serve, he gets 12 out of 20, or 60%, of his serves in. Jerry wants to know if his long-run proportion of getting his first serve in is greater than 50%.