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    did anyone get the last question???? 66p?
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    lol did u guys get a and b as 14 (or was it 19?) and 40?
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    i didnt get a and b, the one question i really fluffed up

    as for the 66p - i did that just by writing out all 10 combinations of 3 coins, then doing sum(px)
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    (Original post by Katie Heskins)
    did anyone get the last question???? 66p?
    yeah u do E(x) for each outcomes with i think is 30, 50, 70, 80 and its like 1/5 for each.. which comes to 66p
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    (Original post by Dust)
    lol did u guys get a and b as 14 (or was it 19?) and 40?
    YES!!
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    (Original post by Katie Heskins)
    YES!!
    (got 19 for a)
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    (Original post by Katie Heskins)
    YES!!
    nice one!
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    (Original post by Dust)
    yeah u do E(x) for each outcomes with i think is 30, 50, 70, 80 and its like 1/5 for each.. which comes to 66p
    oh well...it was only 2 marks I got in such a tangle with that!!
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    (Original post by Katie Heskins)
    (got 19 for a)
    lol yeah i;m trying to remember all the answers i got
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    (Original post by Dust)
    lol yeah i;m trying to remember all the answers i got
    just trying to think of all the other q's which I screwed up...*thinks*

    with that frequencies one...compare it with the poisson's estimate (q2) did you get a fairly accurate comparison?

    And also the one with the "underlying distribution assumption" for 1ii) what did u write?

    I liked the fact that I didn't have to do a graph with this paper...only thing I did like about it :rolleyes:
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    Well I accepted the Null, cos the PMCC value I got was lower than the critical on the 2 tailed test, which im asuming was right?!
    My teacher told me afterwards that it was a one tailed test because the graph indicated positive linear correlation.

    The value from the tables was 0.3365 and my calculated value was 0.359, so i accepted H1
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    lol yeah i hate scatter diagram stuff lol i always make a stoopid mistake

    the underlying one i got rong.. it was a bivariate normal distrubution

    yeah well accurate results i was like the same for 2 values and a difference of 1 for the other 2...

    it was 1-tail?!!! yr jokin!
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    (Original post by manps)
    My teacher told me afterwards that it was a one tailed test because the graph indicated positive linear correlation.

    The value from the tables was 0.3365 and my calculated value was 0.359, so i accepted H1
    :confused: mine said it was 2 tailed...
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    (Original post by Katie Heskins)
    :confused: mine said it was 2 tailed...
    reason being...the first sentence said the man was trying to see if there was ANY correlation
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    hmm i used the 2 tail test both times even after theyve given u the new data value...

    i think its 2 tail test for part i
    and a 1 tail for part iii
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    katie is right!

    i got 0.355 as the coefficient - not 0.359 - that might just be rounding errors though!?

    i didnt do another test for part iii, i just said that the distribution is no longer normal, so the test is invalid.
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    lol i have NO idea wat i got... but it sounds rite wat u guys said lol
    • Thread Starter
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    i did one tail accepted Ho, dats the only do-able question in a whole paper- i prob got it wrong lol
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    lol u no wat? i hate discussin a paper after the exams over...
    but i always find myself doing just that lol
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    yeah me too
 
 
 

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