ATAR Notes: Forum

VCE Stuff => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Mathematics => Topic started by: monokekie on April 06, 2010, 12:48:13 pm

Title: MATHS, help, PLEASE, thanks!~~~
Post by: monokekie on April 06, 2010, 12:48:13 pm: could anyone please solve this questions?~ thanks heapssss
Title: Re: MATHS, help, PLEASE, thanks!~~~
Post by: GerrySly on April 06, 2010, 12:50:58 pm: http://vcenotes.com/forum/index.php/topic,24699.msg251637.html#msg251637
Title: Re: MATHS, help, PLEASE, thanks!~~~
Post by: monokekie on April 10, 2010, 08:44:10 pm: anyone, please?
Title: Re: MATHS, help, PLEASE, thanks!~~~
Post by: QuantumJG on April 10, 2010, 09:01:19 pm: I don't do probability or statistics, but I'll give the question a go.
Title: Re: MATHS, help, PLEASE, thanks!~~~
Post by: QuantumJG on April 10, 2010, 09:20:12 pm: According to wikipedia,

$se_{ \mu } = \dfrac{ \sigma }{ \sqrt{sample size}}$

So according to that:

$se_{ \mu _{E} } = \dfrac{ \sigma _{E} }{ \sqrt{sample size _{E} }} = 0.1897$

$se_{ \mu _{C} } = \dfrac{ \sigma _{C} }{ \sqrt{sample size _{C} }} = 0.3920$

And in physics if we want to find an error in a value that is the difference between two values, we just add the errors of the two values up.

i.e.:

$se_{ \delta } = \dfrac{ \sigma _{E} }{ \sqrt{sample size _{E} }} + \dfrac{ \sigma _{C} }{ \sqrt{sample size _{C} }} = 0.1897 + 0.3920 = 0.5817$

I hope this is right.
Title: Re: MATHS, help, PLEASE, thanks!~~~
Post by: monokekie on April 11, 2010, 10:07:58 am: Thanks for taking your time to have a crack at this question! ^_^