OCR MEI Paper 2 2019 June — Question 1

Exam BoardOCR MEI
ModulePaper 2 (Paper 2)
Year2019
SessionJune
TopicDiscrete Probability Distributions
TypeOne unknown from sum constraint only

1 Fig. 1 shows the probability distribution of the discrete random variable \(X\). \begin{table}[h]
\(x\)12345
\(\mathrm { P } ( X = x )\)0.20.1\(k\)\(2 k\)\(4 k\)
\captionsetup{labelformat=empty} \caption{Fig. 1}
\end{table}
  1. Find the value of \(k\).
  2. Find \(\mathrm { P } ( X \neq 4 )\).