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    PLease help statistics 1 question

    construct a 98% confidence interval

    how do I find z
    says its 2.3263

    how the hell do you get that I can't work it out on the tables wtf help me please
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    DJ, a little question, what if I crossed of about three pages in the moments question and answered in the last page is there any chance they would consider it (notice it)? I did make some arrows pointing to the next couple of pages.

    Because one of my friends had this problem in C2 and had to do a remark because of that
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    C2! Wish me luck:eek:
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    (Original post by justinawe)
    .
    Hopefully you're awake because no one else will be

    Need help...

    5)a) I could do b, after solving the a bit from the paper.

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    And this one...

    9) I have the idea, just a quick run through if you dont mind.

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    Is it easy to get an A in ALevel maths? Because I picked it for ALevel and I want an A when I do it


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    (Original post by JF2013)
    Is it easy to get an A in ALevel maths? Because I picked it for ALevel and I want an A when I do it


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    I believe so yes, it does depend on how you can learn things and apply them. You don't even have to be good at maths (I'm an example of that I think although I haven't officially obtained an a level)

    AS isn't a big jump from GCSE. Score highly in those and you have a lot of leeway for A2 (although you shouldn't have that mindset) and yeah, it's not too bad... I mean 480/600.
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    (Original post by L'Evil Fish)
    C2! Wish me luck:eek:
    Good luck! S1 coming up in about 2hours :eek:
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    C2 today


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    (Original post by L'Evil Fish)
    C2! Wish me luck:eek:
    Good luck for today, you'll do brilliantly!


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    (Original post by Robbie242)
    Good luck! S1 coming up in about 2hours :eek:
    Best of luck for S1, just remember to be very careful when subbing in your values as that is a very easy way of losing marks but overall S1 should be a high scoring module!


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    (Original post by krishkmistry)
    C2 today


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    Good luck!


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    (Original post by MathsNerd1)
    Best of luck for S1, just remember to be very careful when subbing in your values as that is a very easy way of losing marks but overall S1 should be a high scoring module!


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    Cheers! And yeah that's what it is all about, and same with probability just gotta read the question correctly. One problem to get 100ums though if you have to ace most of those explain/comment questions, I ace about 3/4 of them per paper, some of them I just get entirely wrong lol
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    (Original post by Robbie242)
    Cheers! And yeah that's what it is all about, and same with probability just gotta read the question correctly. One problem to get 100ums though if you have to ace most of those explain/comment questions, I ace about 3/4 of them per paper, some of them I just get entirely wrong lol
    Yeah those tend to be a pain, also I don't know if it'll come up this year as it came up for mine but if it asks you to work out the frequency density of a histogram don't just write the number as I'm sure it'll be incorrect, that's the only 1-2 marks I lost for it

    Stats is just so tedious and it use to put me to sleep, never helps I was in a car accident the day before! Still didn't get the best of me though


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    (Original post by Robbie242)
    Good luck! S1 coming up in about 2hours :eek:
    Thanks! You too!
    (Original post by MathsNerd1)
    Good luck for today, you'll do brilliantly!


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    Thanks! Can you by any chance help with my questions above?
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    (Original post by MathsNerd1)
    Yeah those tend to be a pain, also I don't know if it'll come up this year as it came up for mine but if it asks you to work out the frequency density of a histogram don't just write the number as I'm sure it'll be incorrect, that's the only 1-2 marks I lost for it

    Stats is just so tedious and it use to put me to sleep, never helps I was in a car accident the day before! Still didn't get the best of me though


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    What did you manage to get in stats 1 then :P?

    and I completely agree, regression/PMCC/interpolation IS SO BORING
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    (Original post by L'Evil Fish)
    Thanks! Can you by any chance help with my questions above?
    Yeah sure thing, on question 9 if you've been given the radian value for the angle and the area of the shaded section then how would you go about working out the area for the shaded part? Is there a formula you might know which could help you?


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    (Original post by L'Evil Fish)
    Hopefully you're awake because no one else will be

    Need help...

    5)a) I could do b, after solving the a bit from the paper.

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    And this one...

    9) I have the idea, just a quick run through if you dont mind.

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    a)

    S_n=a+ar+ar^2+ar^3+......ar^{n-1}

    Add first term and second term together set that equal to 72, then add first and 3rd term together and set that equal to the second numerical value of 120.

    At least that's how I think you do it
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    (Original post by Robbie242)
    What did you manage to get in stats 1 then :P?

    and I completely agree, regression/PMCC/interpolation IS SO BORING
    I got 96 which I think was pretty damn good considering my state and everything!

    Yeah that's why after last year I've left the Stats at just S1 and S2, although I did prefer S2 over S1 as it seemed more enjoyable


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    (Original post by MathsNerd1)
    Yeah sure thing, on question 9 if you've been given the radian value for the angle and the area of the shaded section then how would you go about working out the area for the shaded part? Is there a formula you might know which could help you?


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    1/2 r^2 theta - 1/2 r^2 sin theta = the value they gave for area

    (Original post by Robbie242)
    a)

    S_n=a+ar+ar^2+ar^3+......ar^{n-1}

    Add first term and second term together set that equal to 72, then add first and 3rd term together and set that equal to the second numerical value of 120.

    At least that's how I think you do it
    I have that, but solving it.. Wait, let me get back to you again... I got it, dw

    I used a = (1-r) instead of 72/(1-r)
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    (Original post by L'Evil Fish)
    1/2 r^2 theta - 1/2 r^2 sin theta = the value they gave for area



    I have that, but solving it.. Wait, let me get back to you again
    That's correct now just fiddle around with that until you can get r by itself and have a value for it


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