Relative to probability distributions as discussed in Sectio
     Relative to probability distributions as discussed in Section 24 5 of our text Cumulative Distribution Functions (CDFs) Probability (mass) (functions Probability density functions (pdfs)   
  
  Solution
Cumulative Distribution Functions (CDFs) ---- Apply to both discrete and continuous random variable
Probability mass function ---------Apply only to discrete random variables
Probability density functions (pdfs) ------ Apply only to continous random variables.

