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Quick question about maths paper 2..

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Comments

  • #32
    ehshup
    Registered Users, Registered Users 2 Posts: 62 ✭✭ehshup


    Enda93 wrote: »
    Hey everyone, just a piece of random information, the way project maths tells us to find a 95% confidence interval is technically inaccurate, they define the margin of error as 1/root(n), it's actually .98/root(n)
    project maths is a really stupid system, they're trying to make maths more true to real life situations and yet they're giving us the wrong formulas :P

    not to mention the proof for theorem 12 which we give isn't actually a real proof for real numbers, it only proves it for rational numbers


  • #33
    MathsManiac
    Registered Users, Registered Users 2 Posts: 1,595 ✭✭✭MathsManiac


    Enda93 wrote: »
    Hey everyone, just a piece of random information, the way project maths tells us to find a 95% confidence interval is technically inaccurate, they define the margin of error as 1/root(n), it's actually .98/root(n)
    project maths is a really stupid system, they're trying to make maths more true to real life situations and yet they're giving us the wrong formulas :P

    And .98 is wrong too, 'cos it should be 0.97998. And that's wrong too, 'cos it should be 0.979981992, etc., etc. What's your point?

    The reality is that statistics in real life is a messier subject than pure maths, and 0.98 is as near as makes no difference to 1.


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