IB Maths AA HL SL 4.5 Probability basics
IB Maths AA HL SL 4.5 Probability basics
Practise forming probabilities from counts, complements and totals, checking constants so probabilities sum to 1 and remain between 0 and 1.
How this is tested
- calculate missing constants by summing probability values to 1 before using the distribution
- find probabilities from counting, complements, or repeated draws without replacement
- reject invalid algebraic solutions by checking whether a probability is less than 0 or greater than 1