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i got a B in biology ASA level: Maths, Chemistry, Physics
As level: Biology and General Paper(over)
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i got a B in biology ASA level: Maths, Chemistry, Physics
As level: Biology and General Paper(over)
i got a B in biology ASactually i was the only one from my whole school who got a B according to my teacher . best of luck with your other subjects
thank you for your help
May Allah reward you for this .
to find Σ(x-50) means that from all the numbers/variables you have collected,subtract 50 from each one.hey guys. please can someone help me with coding data.. i have a problem with that..
9709_w10_qp_62 , question 2
can someone help me with oct/nov 9709_w10_qp_63, question 4
I dont understand what is Σ(x − 60) = 245 ???? can someone explain to me?
Q1 i)Iadmireblue
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w07_qp_6.pdf
Would you mind helping me with no. 1 (i) (ii) & no. 7 (ii) (iii) (iv) please ?
Thanks.
Sorry im quie confused here, arent all the houses in style A the same???Since the survey will definately include 1 house of style C and 1 from B,there are two houses remaining to chose from
Eliminating Style C and B houses you have 7 different kinds of houses to chose from.
So 1 of style B gives 2C1
1 of style C gives 3C1
and for the remaninig your'e left with 7C2
Putting these together you need 1 of B and 1 of C and two of something else other than B or C
so ----> 3C1 * 2C1 * 7C2
Q1 i)
If the mean is 8.95,then Σ(x-a)/n + a = mean
So 8.95= -73.2/24 + a,then just solve for a
ii)
standard deviation = sqr root ( Σ(x-a)^2/n -(Σ(x-a)/n)^2)
THis can be found in the formula booklet
q7 ii) P of taking a red paper clip from Box B is either to put a white clip from A into B and then take a red one from B or to put a red clip from A and put it into B.
You have already found out the probability of the first option in part i.
So,P of selecting red from A and transferring it to B and selcting a red from B is (5/6)*(8/10)
Find this probability and since it there are two options add this to you answer from part i
iii)
This conditional proabability states p(clip a is red and clip B is red)/P(clip B is red)
P(clip a is red and b is red)-This was found in part ii-(5/6)*(8/10)
P(clip b is red) -this is the answer of part ii
iv)
When they mean number of times red is taken it means to say how many times you pick a red.Ie transferring a red to box b,and chosing a white clip from box B,means one time
So the random variable x can be 0-(WW) 1-(WR or RW) 2-(RR)
okay,for the first option WW-P of chosing white from A is (1/6) and P of chosing white from B will be(3/10)
for the second option (WR or RW) -do the same thing as above and add the two probabilities
same goes for the third
Hope it helped![]()
Q6 part one plz!
It'd be a great help if anyone can help me on explaining the mark scheme in ON2010 P63 question no. 6(iii). -- http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w10_qp_63.pdf
I know someone has posted the 'explanation', but I still couldn't understand why the students only have 5 ways when arranged? Someone can explain with a further explanation--because I still don't get it![]()
thanks <3This question is like making two equations and simultaneously solving them. The best I can do is show clearer working out, than what is provided on the mark scheme. Hope it helps.
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