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Math Help - Memory Refreshing

  1. #1
    Senior Member Dinkydoe's Avatar
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    Memory Refreshing

    I've done these excercises before, but It's not really fresh in my memory anymore..

    Suppose X_1,\cdots, X_n independant normal distributed stochasts with \mu=5,\sigma^2=10

    How do we find c such that P(5-c\leq \overline{X}\leq 5+c)=0.6
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  2. #2
    Flow Master
    mr fantastic's Avatar
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    Quote Originally Posted by Dinkydoe View Post
    I've done these excercises before, but It's not really fresh in my memory anymore..

    Suppose X_1,\cdots, X_n independant normal distributed stochasts with \mu=5,\sigma^2=10

    How do we find c such that P(5-c\leq \overline{X}\leq 5+c)=0.6
    Start by getting the pdf for \overline{X}.
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