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    How do you do this question?
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    (Original post by fullmetal heart)
    How do you do this question?
    We're not here to do your homework for you, please show some working or a smattering of your own thoughts concerning the question.
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    I'll start you off

    Y~N (μ,σ2)

    to find μ (mean) you do \frac{1+2+3+4}{4}
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    (Original post by undercxver)
    I'll start you off

    Y~N (μ,σ2)

    to find μ (mean) you do \frac{1+2+3+4}{4}
    Are you sure it's normally distributed?
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    (Original post by Zacken)
    Are you sure it's normally distributed?
    Discrete random variables. :facepalm:
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    I figured out the probabilities of the combinations and the sum of all the combinations, this meant that I could figure out the probabilities of getting a particular score. But I don't know what to do now?

    UPDATE: I just remembered that I should use the formula for variance and then work out the standard deviation :P
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    (Original post by fullmetal heart)

    UPDATE: I just remembered that I should use the formula for variance and then work out the standard deviation :P
    Yep standard deviation is just the square root of variance. :yep:
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    (Original post by Zacken)
    Yep standard deviation is just the square root of variance. :yep:
    Thanks, wow I can be thick sometimes, I literally just used that formula two questions ago
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    (Original post by fullmetal heart)
    Thanks, wow I can be thick sometimes, I literally just used that formula two questions ago
    No worries, glad you figured it out yourself!
 
 
 
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