A middle school football player, Bo, is just learning how to kick field goals. Currently, he only makes 1/3 of his kicks. A number cube is being used to simulate the result of Bo’s kicks where the numbers 11 or 22 represent a made field goal and the numbers 3,4,5, or 6 represent a missed field goal. Use the following 20 trials of rolling a fair number cube to answer each question. ​ 2436 4251 6233 5316 5212

​ 6643 5326 5313 2152 4164

​ 3642 3554 6413 2563 4533

​ 2512 6634 4536 2112 5546

a. The estimate of the probability that Bo makes three or four field goals is .

​b. The estimate of the probability that Bo does not make any field goals is