Question: Band2 Week 1
A bag of sweets contains only two different flavours - strawberry and orange.
The probability that a sweet is strawberry flavour is 0.8
What is the probability that a sweet is orange flavour?
1. **State the problem:** We have a bag of sweets with two flavours: strawberry and orange.
2. **Given:** The probability of picking a strawberry sweet is $0.8$.
3. **Find:** The probability of picking an orange sweet.
4. **Formula and rule:** Since there are only two flavours, the total probability must add up to 1.
$$P(\text{strawberry}) + P(\text{orange}) = 1$$
5. **Calculate:**
$$P(\text{orange}) = 1 - P(\text{strawberry}) = 1 - 0.8$$
6. **Simplify:**
$$P(\text{orange}) = 0.2$$
7. **Answer:** The probability that a sweet is orange flavour is $0.2$.