The use of probability models to compare the relative frequency of events with the theoretical probability.
The use of Venn diagrams to solve probability problems, deriving and applying the following for any two events in a sample space S:
𝑃(𝐴 U 𝐵) = 𝑃(𝐴) + 𝑃(𝐵) −𝑃( 𝐴 n 𝐵).
A and B are Mutually exclusive if 𝑃(𝐴 n 𝐵) = 0
A and B are complementary if they are, ⮚ mutually exclusive and 𝑃𝑃(𝐴𝐴) + 𝑃𝑃(𝐵𝐵) = 1. T