2007 H2 Mathematics Paper 2 Question 6

The Binomial Distribution

Answers

0.933{0.933}
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Full solutions

Let X{X} denote the r.v. of the number of people who have gene A{A} out of 10{10}
AB(10,0.24)A \sim \textrm{B}\left(10, 0.24\right)
P(A4)=0.933 (3 sf)  \begin{align*} \mathrm{P}(A \leq 4) &= 0.933 \textrm{ (3 sf)} \; \blacksquare \end{align*}

(a)

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(b)

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