AQA AS Paper 2 2020 June — Question 17

Exam BoardAQA
ModuleAS Paper 2 (AS Paper 2)
Year2020
SessionJune
TopicDiscrete Probability Distributions
TypeVerify probability from independent trials

17 A game consists of spinning a circular wheel divided into numbered sectors as shown below.
\includegraphics[max width=\textwidth, alt={}, center]{7cca79eb-fd09-4ec0-8a1d-a7a38ca73f7a-22_764_963_404_541} On each spin the score, \(X\), is the value shown in the sector that the arrow points to when the spinner stops. The probability of the arrow pointing at a sector is proportional to the angle subtended at the centre by that sector. 17
  1. Show that \(\mathrm { P } ( X = 1 ) = \frac { 5 } { 18 }\)
    17
  2. Complete the probability distribution for \(X\) in the table below.
    \(\boldsymbol { x }\)1
    \(\mathbf { P } ( \boldsymbol { X } = \boldsymbol { x } )\)\(\frac { 5 } { 18 }\)