Keno. In the game of keno, 20 balls are selected at random from 80 balls numbered 1–80. In Exercise 1.48 on page 38, you used simple random sampling to simulate one game of keno.

a. Use systematic random sampling to obtain a sample of 20 of the 80 balls.

b. Which method is easier: simple random sampling or systematic random sampling?

c. Does it seem reasonable to use systematic random sampling to simulate one game of keno? Explain your answer.