1. These are all examples of random variables EXCEPT .....

Select one:

a. age of a group of students

b. successes in an exam

c. complaints about a service

d. nationality of a person

2.A random variable is ...

Select one:

a.. a result

b. a number

c. an association rule

d. A description

3.A probability function is defined as a probability distribution, provided that it describes how the probabilities are distributed among the values of the random variable.

why is this statement false?