Gary

Hi,

I have 2 categories,

{male, famale}

And 12 rows,

{Jan, Feb, ..., Dec}

How am I to find Chi Square when the expected is 50/50 to male and female?

What will the result mean?

How many degrees of freedom are there?

Many thanks.

Using the derivative as an incremental quotient

i.e. lim(X->0) Change in y / Change in X

Find the derivative of log(x)

I'm not looking for 1/x, but what I should do to using the definition given.

Now, I have an idea that I expand this to a series and sum the terms but a little stuck.

Thanks

I want to be able to explain the idea of "derivative of a function"

An example in physics and/or geometry, would be very useful.

Thanks

it's been said that the way massive stars die is an important factor in the evolution of the universe

which processes allowed for this evolution?

-I know is because when they are at there end-points the star will collapse and this produces massive temperatures and pressures, that of high enough magnitude so that heaver elements may be produced in this event, also know as a supernova.

what are the reasons behind W and Z bosons, and them being large and for that reason life exists?

without going into much detail;

what are Characteristics of Weak Interaction?

so, I'm almost 17 and I've been trying to find out where i can get my NI number.

i APPARENTLY did get a card on my 16th birthday however my farther 'looked' after it and now has apparently lost it;

I've asked for him to obtain the number again for me... it's been over 4 months now, so understandably i am ticked off.

So i want to get the Number, not the card with the number as i know i can only get 1 replacement for myself in my lifetime, any websites or telephone numbers would be appreciated.

thanks.

find the set values of X of which:

x`2 < 10 - 3x

11 < x`2 + 10

please show working out, thanks

cable consists of strands of cupper wire, each has a diameter of 1.35mm

1)calculate the cross sectional area of one strand

2)calculate the resistance of a 100m length of cable, given the resistivity 1.6x10^-8

3)cable carrys 20A, whats the potentional difference (voltage) between the ends of the cable

i'd just like the formula so i can check it with mine, no need to work it all out although an answer might be benificial ;]

thanks x

1)

particle moving in a straight line, constant acceleration from point A to B where AB=48m. at A the it has 4m/s and at B 16m/s

a)find acceleration of the particle

b)time it takes to move from A to B

2)

car at 18m/s on a straight road, applies breaks to a rest (0m/s) with constant deceleration of 3ms-^2

a)find distance travels as they decelerate

b)time to decelerate from 18m/s to rest

thanks, it's really the 1st one i'm stuck with.. mind blank after 30 of these, got so angry with wrong answers! lol

3.5g of Iron(3)Oxide are producted in this experiment

4Fe + 3O2 = 2Fe2O3

RMM= 252+80=332

i want to know;

how many moles of Fe2O2 are produced?

how many moles of Fe are required to made this much Fe2O3?

how much Fe is required?

Actor William Petersen is to leave CSI: Crime Scene Investigation, having been with the TV forensics drama since its first episode eight years ago!

He will still make guest appearances as Gil Grissom but his character will no longer be seen on a regular basis, two of the show's executive producers said.

NEW CHARATOR!!

A new male character will join CSI in place of Petersen

"Whoever comes in and joins the team after Grissom is going to be a different guy. But the nature of the show and what fans get out of it, that's not going to change."

The programme is broadcast by CBS in the United States and seen around the world, with Five screening it in the UK.

-----> So... DO you think CSI will be the same without him?

-------------->can they still produce the same brilliant crimes and still make them intresting to watch?

-------------->How do you think the new charator will compare up to Gil Grissom?

-------------->maybe.. it will be ok? and you didn't see Gil Grissom as a great charator.. ?

Best CSI moments in your memory? :)

i would just like to know and read about some other peoples opinions and experiences that they have has at school in Groups.

when i say Groups i just mean Friendship groups, Football, or anyother sport.. a computor club, maths club and please comment on how they have affected you in what ways

thanks :) x

i would just like to know some opinions on how sporting groups can benifit the group, like competition between one another and such..

and maybe some of your own views on this, and how your sports group has helped you

thanks x