Conditional Probability and Tree Diagrams: Determining Thumb Preference Based on Handedness

In this video, we learn about conditional probability through the example of determining if someone is right or left thumbed based on their right-handedness. The teacher explains how to read a tree diagram and fills it in with probabilities. Using a small sample size, the probability of being right thumbed given that you are right-handed is found to be approximately 59%. The video emphasizes that a larger sample size may yield different results.