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    (Original post by chandoug)
    q7 (combining of normal distributions)
    does 0.9032 or 0.881 ring a bell?
    thats exactly what i got!!!!
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    yay finally some1 that agrees with me
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    (Original post by chandoug)
    yay finally some1 that agrees with me
    how do you start a new thread?
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    (Original post by candy88524)
    how do you start a new thread?
    On the subforum there is an icon at the top left (i think) saying psot new thread.

    Anyway, can someone please confirm whether my answer for q. 6 is right.

    This is the full question:

    6) 3 dice, assumed to be fair, are rolled and the number of sixes is recorded. The set of 3 are rolled 250 times in total, with X, the number of sixes on each roll, written down.

    Observed: x = 0, 125, x=1, 109, x=2, 13, x=3, 3.

    a) Write down a suitable model for X (2)

    b) Test whether your model is suitable for this data using a 1% significance level, stating your hypotheses clearly (11)

    c) Say how your test would be affected if the dice were not assumed to be fair. (2)
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    (Original post by beauford)
    Anyway, can someone please confirm whether my answer for q. 6 is right.

    This is the full question:

    6) 3 dice, assumed to be fair, are rolled and the number of sixes is recorded. The set of 3 are rolled 250 times in total, with X, the number of sixes on each roll, written down.

    Observed: x = 0, 125, x=1, 109, x=2, 13, x=3, 3.

    a) Write down a suitable model for X (2)

    b) Test whether your model is suitable for this data using a 1% significance level, stating your hypotheses clearly (11)

    c) Say how your test would be affected if the dice were not assumed to be fair. (2)
    i didnt do it ur way so i have no ideA! yes it would be great if someone could confirm the answer!!!!
 
 
 
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