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when do we assume equal population variances for a t test ?
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when do we assume equal population variances for a t test ?
when do we assume equal population variances for a t test ?
Nice notesAssalamoalaikum to all. Here is a link which might help u all.
http://www.cimt.plymouth.ac.uk/projects/mepres/alevel/alevel.htm
This is how I think (I'm not sure if it is nonsense )How do we do questions like s09 p1 Q.9 last part?
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics - Further (9231)/9231_s09_qp_1.pdf
This is how I think (I'm not sure if it is nonsense )
k^n × A^n = (k^n) P (D^n) (P^-1) = P × (k A)^n × P^-1
So I think just need to ensure that k A has all elements less than 1 and greater than -1. Then the whole thing tends to 0 as n gets larger.
Here the Diagonal matrix you came up with should be like this:
1 0 0
0 5 0
0 0 7
The non-zero numbers' orders may be different but it doesn't matter.
Here to make these three all > -1 and < 1, k should be < 1 and > -1.
So the set is -1 < k < 1.
Hope my reponse is helpful to you.
Ouch I know where I got wrong...But the MS says -1/7 < k < 1/7
How do you do Q6, p13 Summer 2011
How's the prep going for tomorrows exam?
Anyone expecting A*'s? (not me LOL)
I don't remember them all, but these should be of use:Gosh, and can somebody please post up all the vector distance formulas? :/ I'm still rather struggling with the concept of Vector projection and calculating distances. Are there any specific notes or tips for that?
how was today's paper ? expected GT ?
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