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Maths (Higher)
Conditional probability

Starter quiz

  • Two spinners are spun once each. The table shows the outcomes for each spinner. Match each value from the frequency tree to its value.
    Two spinners are spun once each. The table shows the outcomes for each spinner. Match each value from the frequency tree to its value.
    • a
      ⇔
      24 ✓
    • c
      ⇔
      15 ✓
    • e
      ⇔
      3 ✓
    • g
      ⇔
      5 ✓
  • An investigation into some rhubarb plants aims to see if using a special fertiliser (F) increases the chance of the plant yielding rhubarb (R). The diagrams show the results. <Math>b</Math> = <span class="blank">______</span>.
    An investigation into some rhubarb plants aims to see if using a special fertiliser (F) increases the chance of the plant yielding rhubarb (R). The diagrams show the results. b = ______.
    • '195' ✓
  • An investigation into some rhubarb plants aims to see if using a special fertiliser (F) increases the chance of the plant yielding rhubarb (R). The diagrams show the results. <Math>c</Math> = <span class="blank">______</span>.
    An investigation into some rhubarb plants aims to see if using a special fertiliser (F) increases the chance of the plant yielding rhubarb (R). The diagrams show the results. c = ______.
    • '240' ✓
  • An investigation across 60 days explores whether days with rain (R) were more likely to see deer (D) in urban areas. The value of <Math>y</Math> is <span class="blank">______</span>.
    An investigation across 60 days explores whether days with rain (R) were more likely to see deer (D) in urban areas. The value of y is ______.
    • '4' ✓
  • An investigation across 60 days explores whether days with rain (R) were more likely to see deer (D) in urban areas. The value of <Math>z</Math> is <span class="blank">______</span>.
    An investigation across 60 days explores whether days with rain (R) were more likely to see deer (D) in urban areas. The value of z is ______.
    • '31' ✓
  • A game developer tested to see whether a playable character was more likely to win (W) with a rebalance (R) of the character’s stats or not. P(R'W) = <span class="blank">______</span>.
    A game developer tested to see whether a playable character was more likely to win (W) with a rebalance (R) of the character’s stats or not. P(R'W) = ______.
    • '0.12' ✓
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