You and your friend carpool to school. Your friend has promised that he will come choose you up at your place at 8am, but he is always late(!) The amount of time he is late (in minutes) is Uniform random variable between 3 and 13 minutes. Which of following statements is/are true? CHECK ALL THAT APPLY.
A. The mean amount of time that your friend is late is 8 minutes.
B. It is less likely that your friend is late for more than 12 minutes than he is late for less than 4 minutes.
C. The standard deviation of the amount of time that your friend is late is 2.89 minutes.
D. None of the above