On Mondays, Rani cooks her evening meal. She has a pizza, a burger or a curry with probabilities $$\(0.35,0.44,0.21\)$$ respectively. When she cooks a pizza, Rani has some fruit with probability $$\(0.3\)$$. When she cooks a burger, she has some fruit with probability $$\(0.8\)$$. When she cooks a curry, she never has any fruit. Find the probability that Rani has some fruit. ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................
Exam No:9709_s20_qp_51 Year:2020 Question No:5(b)
Answer:
\(0.35 \times 0.3+0.44 \times 0.8(+0)\)
\(0.457\)
\(0.457\)
Knowledge points:
5.3.2 use addition and multiplication of probabilities, as appropriate, in simple cases (Explicit use of the general formula is not required.)
5.3.4 calculate and use conditional probabilities in simple cases.
Solution:
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