This section first defines discrete and continuous random variables. Then, it introduces the distributions for discrete random variables. It also talks about the mean and variance calculations.
1.
a. discrete
b. continuous
c. continuous
d. discrete
e. discrete
3.
a. discrete
b. continuous
c. discrete
d. discrete
e. continuous
5.
a. 
b. an interval 
(answers vary)
c. an interval (answers vary)
d. 
e. 