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  1. A

    Stats 1 Preparation

    never mind some boards do it this way like edexcel and others but in cambrige we take the half which would be 45
  2. A

    stats please help

    you already found out 4 different colours and 3 diff colours all u do now is find 2 different colours and add up previous results for 2 different cols u must pick two colours out of six and arrange these 4 pegs so it will be 6C2 *4!/2!2! that will give you 90 add up with the rest
  3. A

    Continuity Correction Factor

    we use these in binomial approximations
  4. A

    conditions for binomial and normal dist

    a)independant events constant prob fixed amount of trials two and only two outcomes b) what? i would say continuos data and no skewness a mean of 0 and a varience of 1
  5. A

    MODULUS IN S1

    ok thats easy you find you find the area greater than 1+mean then times by 2
  6. A

    MODULUS IN S1

    oh the one in normal thats just common sense never seen it any where else
  7. A

    MODULUS IN S1

    wats modulus?
  8. A

    top 5 school in pakistan for o and a levels??

    you guys are lucky, i couldnt find a good school and i study alone with two hours of tuition a week.
  9. A

    Stats 1 Preparation

    look if the perms and combs come easy then the rest of the paper should go well
  10. A

    Stats 1 Preparation

    lol chill man ,chill
  11. A

    Stats 1 Preparation

    um wouldnt median be preffered if there is an outlier??
  12. A

    Books....

    under the dome!
  13. A

    balckberry only for buisness people?

    then give me your iphone! no dont get a BB i had one and they really suck unless your one of them BBM addicts or a business man. i dont care about wat phone i have, there are much better electronics you can invest in. im saving up for an Ipad.
  14. A

    Maths S1 M/J10 Solve please

    for part 5 all u do is find the number of ways they are together thenn (iii)-ans so if blue and pink are together then u must choose 1 other card from the 7 so 7C1*2*2 since you can arrange the cards in 2*2 ways so you will get 28 so 504-28=476
  15. A

    permutation queston

    yes we already established that long time ago
  16. A

    stats

    which variant??
  17. A

    S1 question

    oh sorry yes its 1/30 so the other one is 29/30
  18. A

    S1 question

    came across this in pastpapers for i)the probability for it bieng a number ending in a six is 30/300 so we use binomial way 5C2*(0.1^2)*(0.9^3) for part ii) probability of orange and 6 at the end is 10/300 so it will be using binomial expansion 5C2*(1/3 ^2)*(2/3 ^3)
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