Chapter 2 Section 1 Question 11
Question
Suppose the sample space S is finite. Is it possible to define an unbounded random variiable on S? Why or why not?
Answer
Author: Mohammad-Ali Bandzar| Date:Oct 14 2020
we can find the definition of unbounded from Example 2.1.10: if X(s) increases or decreases without bound as $s\rightarrow\infty$ X can be called an unbounded random variable.
If our sample space is finite we can not have an unbounded random variable on S. This is because we must have an upper bound defined by $max_{s\in S}X(s)$ and a lower one defined by: $min_{s\in S}X(s)$.