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Paper 1Statistical Techniques3 marks
In a survey, 40% of people like tea (event A), 50% like coffee (event B), and 20% like both tea and coffee.
Description
Survey on drink preferences
Event A: Likes tea Event B: Likes coffee Given probabilities: P(A) = 0.4 P(B) = 0.5 P(A ∩ B) = 0.2
| Event | Probability |
|---|---|
| P(A) | 0.4 |
| P(B) | 0.5 |
| P(A ∩ B) | 0.2 |
- a[3]
Calculate Calculate the probability that a person likes tea or coffee (P(A ∪ B)).
Aim for approximately 3 distinct marking points.
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