Foundation November 2022 Paper 3 Q26
26 One weekend the Keddie family is going to do a sports quiz and a music quiz.
The probability that the family will win the sports quiz is 0.3
The probability that the family will win the music quiz is 0.35
(a) Complete the probability tree diagram.
(b) Work out the probability that the Keddie family will win both the sports quiz and the music quiz. (2)
| Answer | Mark | Mark scheme |
|---|---|---|
| 0.7 | B1 | for 0.7 on the first branch |
| 0.65, 0.65 | B1 | for 0.65, 0.65 on the second branches |
Additional guidance
Accept equivalent fractions or percentages for probabilities
| Answer | Mark | Mark scheme |
|---|---|---|
| 0.105 | M1 | for \(0.3 \times 0.35\) |
| A1 | oe |