AQA AS Paper 2 2023 June — Question 16

Exam BoardAQA
ModuleAS Paper 2 (AS Paper 2)
Year2023
SessionJune
TopicDiscrete Probability Distributions
TypeSum or product of two independent values

16 The discrete random variable \(X\) has probability distribution
\(\boldsymbol { x }\)123456
\(\mathbf { P } ( \boldsymbol { X } = \boldsymbol { x } )\)0.30.10.20.10.10.2
The discrete random variable \(Y\) has probability distribution
\(\boldsymbol { y }\)234567
\(\mathbf { P } ( \boldsymbol { Y } = \boldsymbol { y } )\)0.3p0.20.1p\(3 \mathrm { p } + 0.05\)
It is claimed that \(\mathrm { P } ( X \geq 3 )\) is greater than \(\mathrm { P } ( Y \leq 4 )\)
Determine if this claim is correct. Fully justify your answer.
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