Recent content by PuzzledMe

Thanks so much tim! It did =)

Hi, sorry I know I asked this about 10 days plus ago but I felt I should come back to it because on checking on my workings with the answers, I'm still puzzled. Answer says 6x - 6x², 0 ≤ x ≤ 1 My workings gave me 6x - 9x², 0 ≤ x ≤ 1 Am I doing it somewhere wrong? My workings P(M < x) =...

Hi, I decided to write about my situation. I hope it won't make too much trouble for you all for me to share my personal problems like this. I lost my direction some part of my academic life but I am trying hard to work hard at getting down to the major root of the problem - my past...

Stick by the cosine rules and you'll be fine.

I'll think about it and work this out tomorrow, late now...thanks tim, as always. I think I'm beginning to see the bigger picture that there are a limited number of combinations and also a sort of "fixed" probability rate... Mulling on it. :)

Opps my bad, first time using Latex. It's something to do with this part of the question... I read up on the CRV chapter notes and what they said about median is something along this... So it should be middle of the lowest value and highest value... I don't know where to begin with...

I have worked out (ii), but I'm stuck on the last part as I cannot visualise the median's relation to any of the stuff that I've worked out so far. Steps for (ii) to show that I've been thinking: F(S) = x³ - 3x² + 3x f(S) = 3x² - 6x + 3 Mean of S = E(S) = \int^{\infty}_{-\infty}...

Health is important?

Pilot is good, though I lost them a lot as many other people have them too (they just take it for their own). I have an unknown brand of mechanical pencil but I'm still using it.

Good for you! Yea smoking's an expensive habit to keep. I don't know why people found it cool to smoke at all. Not glam (for girls especially) and it shrinks your body cells too.

Thanks tim, somewhat worked things out to show part (i) of question. Part (ii) shouldn't be a problem, so now I have to think about the last one with M and S. I'm thinking that if S can now be worked out, I can try the reverse and then lead to M. Will see if it works here... It looks like I...

Probability is x? (Looking at this question makes me think I'm missing out some very important concept for this chapter...any idea what I should be reading up on to at least have a clue? I did fairly well for the statistics paper last year but I don't think it was the best I can do.)

So if say there is observation A, B and C (lowest to highest)... I was thinking, will B and C affect observation A? First thought is no but I'm a little hesistant before I'm clear on this... Could it be x? Or something that somehow leads to 3x - 3x² + x³? Still thinking through...

The question said the flask started out with 1 mole of H2 and 2 moles of I2. So the final should be (1-x) mole of H2 and 2 moles of (2-x) mole of I2 if I'm not wrong. From your steps I think you're doing it fine. Only that you need to have that [2H]² somewhere as Snazzy says. It's a matter of...

I'm way past my bedtime so I'll check much much later but leaving the message here. H2 + I2 -><- 2HI is an important equation. You're thinking along the right track, there has to be some changes happening to the system to reach equilibrium. Thought: could the pressure of H2 be the same...