Higher November 2018 Paper 1 Q14
14 A and B are two events.
Some probabilities are shown on the Venn diagram.
Work out \(\quad \text{P}(A' \cup B)\) [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| 1 – 0.3 – 0.15 – 0.35 or 1 – 0.8 or 0.2 or 0.15 + 0.35 (+ 0.2) or 0.5 (+ 0.2) or 1 – 0.3 or \(A' \cup B\) clearly shaded on diagram | M1 | oe |
| 0.7 | A1 | oe fraction, decimal or percentage |
Additional guidance
| Do not award M1 for 0.15 + 0.35 or 0.5 if it is then used in an incorrect calculation eg 0.15 + 0.35 = 0.5, 0.5 + 0.3 = 0.8 (no further working) | M0 |