Step 8 Objective
Know that the sum of probabilities of all mutually exclusive outcomes is 1, and use this when solving problems.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
What if pupils find this a barrier?
Use a set of cards numbered from 1 to 20. Form two sets and identify the probability of picking each card from its set. Explore the link with the probability of choosing one of the remaining cards.