S1 and S2 DOUBTS HERE!!!!

[astarmathsandphysics]

for histograms use
height_2/height_1=frequency density_2/frequency density_1

length of base_2/length of base_1=length of interval_2/length of interval_1

[insane.kid]

astarmathsandphysics cld u plz solve these two question edexcel stats
1) year 2002 june 6th question
2) year 2005 june 4th question
thank u

[astarmathsandphysics]

one mo.

[astarmathsandphysics]

those two questions above

[astarmathsandphysics]

see also

http://www.astarmathsandphysics.com/igcse_maths_notes/igcse_maths_notes_calculating_the_dimensions_of_histogram_bars.html

[insane.kid]

Sorry for the late reply thanks a lot astar

[Blizz_rb93]

i dont get interpolation, can someone explain to me the exact steps of what to do

[astarmathsandphysics]

I will do a page on interpolation for stats.
Here is a page also http://www.astarmathsandphysics.com/a_level_maths_notes/FP1/a_level_maths_notes_fp1_linear_interpolation.html

I will do the stats page tomorrow

[::~A!i~::]

A discrete random variable is such that each of its values is assumed to be equally likely.

(a)Write down the name of the distribution that could be used to model this random variable.
(b)Give an example of such a distribution.
(c)Comment on the assumption that each value is equally likely.
(d)Suggest how you might refine the model in part (a).

Can someone please explain, im confused..?

[astarmathsandphysics]

a)discrete uniform
b)SCORE ON A DICE
c)perfectly possible
d)throw the dice 1000000000000000000000 times and find from this
the probability of scoring each of 1,2,3,4,56,

[Baladya]

Hey long time no c all

So looks like AS isn't that easy after all. Year is gonna be full of doubts

Anyway,

http://www.xtremepapers.net/CIE/International%20A%20And%20AS%20Level/9709%20-%20Mathematics/9709_s09_qp_6.pdf
Q6)ii) I drew the graph and decided to put the sign which means that there is skipped values on the y axis... Is this okay? like doesnt this change the shape of the first part of the graph?

Thanks

[astarmathsandphysics]

hu

[astarmathsandphysics]

7. A committee of 6 people, which must contain at least 4 men and at least 1 women, is to be chosen from 10 men and 9 women.

i) Find the number of possible committee that can be chosen. [3]

ii) Find the probability that one particular man, Albert and one particular woman, Tracey are both on the committee.[2]

iii) Find the number of possible committees that include either Albert or Tracey but not both. [3]

iv) The committee that is chosen of 4 men and 2 women. They queue up randomly in a line for refreshments. Find the probability that the women are not next to each other in the queue. [3]

[Arthur Bon Zavi]

I am giving Exams for S1 this May/June. (2011)

[Freaked12]

Can you help with this question, please?

7. A committee of 6 people, which must contain at least 4 men and at least 1 women, is to be chosen from 10 men and 9 women.

i) Find the number of possible committee that can be chosen. [3]
(6P1+8P1)*6!
ii) Find the probability that one particular man, Albert and one particular woman, Tracey are both on the committee.[2]

iii) Find the number of possible committees that include either Albert or Tracey but not both. [3]

iv) The committee that is chosen of 4 men and 2 women. They queue up randomly in a line for refreshments. Find the probability that the women are not next to each other in the queue. [3]

Let me work out the rest