WST01/01, (Edexcel) IAL S1 October 2022, Q7, Discrete Random Variables, Cumulative Distribution

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  • Опубликовано: 18 ноя 2024

Комментарии • 9

  • @abdel-rahmansaeed4514
    @abdel-rahmansaeed4514 Год назад +3

    Please why in question(e) we didnt multiply 0.23 by 2 because Charlie may select number before Bruno in the 3 cases

    • @abdullahtahseen
      @abdullahtahseen Год назад +1

      i had the exact same question. Did you find a reason for that ?

    • @Totally_Abood
      @Totally_Abood Год назад +5

      We're finding probability that Bruno Is selecting "before" charlie and the number that bruno selects should be higher than what charlie selects. So there's only 2 possibilities for that. If bruno selects 0 charlie will select the same or higher so we don't count that. Only 2nd and 3rd.

  • @Suadabdirizak
    @Suadabdirizak 6 месяцев назад +2

    I really don’t like probability questions at least use tree diagrams

  • @mddipto6283
    @mddipto6283 Год назад +2

    Sir please solve jan 23 s1 and p2 paper of edexcel as soon as possible

    • @MrHassaansMathsChannel
      @MrHassaansMathsChannel  Год назад +6

      I can only upload an Edexcel paper 9 months after it was set or else I am liable to get copyright strikes

  • @liza.56
    @liza.56 3 месяца назад

    6:43 sir what do we do with the 4?

    • @MrHassaansMathsChannel
      @MrHassaansMathsChannel  3 месяца назад +1

      Addition and subtraction doesn't affect Variance ... only multiplication.

    • @liza.56
      @liza.56 3 месяца назад

      @@MrHassaansMathsChannel Ok sir Thankyouu