Mathematics (AS & A Level) · Oct / Nov 2020 · Paper 52 · Question 4
9709
As printed in the paper
The question as text
In a certain country, the weather each day is classified as fine or rainy. The probability that a fine day is followed by a fine day is 0.75 and the probability that a rainy day is followed by a fine day is 0.4. The probability that it is fine on 1 April is 0.8. The tree diagram below shows the possibilities for the weather on 1 April and 2 April.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
4(a)[1]
4(b)[2]
4(c)[3]
4(d)[3]
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