Question

How do you know when to use Bays theorem?

Answer 1

Bayes theorem:It Determines the probability of an event based on the prior knowledge of conditions that might be related to that event.

For example, bag$1$ contains $2$ red and $3$ green balls, bag $2$contains $4$ red and $2$ green balls, the probability of drawing a green ball from bag $1$

can be found using Bayes theorem. Here, the condition of the event is selecting a ball from bag $1,$ that means the probability of occurrence of the event depends on the condition related to that event. In this way, Bayes theorem of probability helps in finding the required solution.