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  1. soumayya

    statistics

    there are mark schemes on zis site itself..
  2. soumayya

    statistics difficult question

    N2005 paper 2 Q4 (i) A and B are mutually exclusive events: P(A or B or both) = P(A) +P(B) 0.8 = p + 0.5 p = 0.3 (ii) P(A U B)= P(A) +P(B) - P(A intersection B) P( A intersection B) = P(A) +P(B) - P(A U B) = p +0.5 - 0.8 A and B...
  3. soumayya

    statistics difficult question

    N 2007 paper 2 Q 2(ii) P(only A occurs)=0.3 - 0.18 =0.12 P(only B occurs)=0.6 - 0.18 =0.42 P(either A or B but not both occurs)=0.12 + 0.42 = 0.54
  4. soumayya

    statistics difficult question

    N 2008 paper 1 Q 8(a)(iv) P(visitor calls to see Claude)=0.4 P(only Claude at home)=P(Brian and Abdul not at home) * P(Claude not at home) =0.8 * 0.7 * 0.4 =0.224 P(visitor calls to see Claude but Claude is the only one of the...
  5. soumayya

    Science joke for you scientists!!!!

    Why did the chicken cross the road? According to Le Chatelier: The chicken crossed the road because there were too many moles of chicken on the reactants side of the road equilibrium.
  6. soumayya

    Science joke for you scientists!!!!

    Teacher: Johnny, what's H2SO4? Johnny (for it is he): Er, hang on. I know this one. It's on the tip of my tongue... Teacher: Well spit it out quick, it's sulphuric acid!
  7. soumayya

    general paper

    does anyone have any suggestion of how to revise for general paper..?
  8. soumayya

    Latest members of 'Forum Moderation Team'!

    congratz guyss...
  9. soumayya

    MATH 9709 62 (Statistics)

    u're welcme...
  10. soumayya

    answer urgent..!!

    If an angle is uncertain, then the sine or cosine of that angle will be uncertain too. Just calculate the function (sine, cosine, etc.) for the largest and smallest angles allowed by the angle uncertainty limit and note the resulting range of results: This is just the “brute-force” method, but...
  11. soumayya

    MATH 9709 62 (Statistics)

    suppose Y=2X ..zen Var(Y)=4 Var(X) if Y=X1+X2...zen Var(Y) = Var(X1) +Var(X2)=2Var(X)
  12. soumayya

    MATH 9709 62 (Statistics)

    my calculator is fx-82TL does anyone knw how to find values of the normal distribution..?
  13. soumayya

    eId mUbArAK To all the muslim brothers over here

    Eid mubarak 2 u all....
  14. soumayya

    ~~jokes?? in here?? really??

    hahaha.....
  15. soumayya

    Ramadan Mubarak!!!!!

    ramadan mubarak 2 u all!!!!!!!
  16. soumayya

    Naming suggestion required!

    www.youngbrains.org
  17. soumayya

    Latest members of 'Forum Moderation Team' (Updated)!

    congratzzz....
  18. soumayya

    3 word game

    The prince replied
  19. soumayya

    zone?????

    thnx .....
  20. soumayya

    zone?????

    i'm from mauritius...it's in wat zone......??????
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