Mathematics: Post your doubts here!

[daviruss]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w11_qp_61.pdf no.5 i
the examiners report says to use 0.97 as the probability :S

i knw i have the same problem here i dnt knw why he left 0.94 ?

 

[lisahamed]

i knw i have the same problem here i dnt knw why he left 0.94 ?

hmm :S

 

[Maz]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_w12_qp_62.pdf
5 b iii please!

 

[biba]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s10_qp_61.pdf
http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s10_ms_61.pdf
4 part ii ... anyone?

 

[lisahamed]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w12_qp_62.pdf
5 b iii please!

1 2 3 4 5 6 7 8 9 10 11 12
imagine each of the above as seats with named with numbers. we could start the row from 1 or 2 or 3 or 4 or 5 and still 8 people would fit the row. remember, there are no spaces between them. so we have 5 options to start from. again within each arrangement, the people could be positioned in 8! or 8P8 ways
so the answer is 5*8!

 

[Maz]

1 2 3 4 5 6 7 8 9 10 11 12
imagine each of the above as seats with named with numbers. we could start the row from 1 or 2 or 3 or 4 or 5 and still 8 people would fit the row. remember, there are no spaces between them. so we have 5 options to start from. again within each arrangement, the people could be positioned in 8! or 8P8 ways
so the answer is 5*8!

Ahh! I was taking 4 by mistake, but method was technically correct.
Thanx

 

[iFuz]

assalam walaikum
brother... if it is phi(-k)=0.7465
according to the rule phi(-k)= 1- phi(k)
hope that helps

No Im asking that in case we are taking phi inverse of a probability to get value of A.

 

[19islandprincess96]

Good Luck for tomorrow everyone!
Insha'Allah we'll all do good!

 

[x-gamer-x]

anyone plz help me in Q1 (ii)
thanks in advance
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w09_qp_62.pdf

 

[aniketjain]

anyone plz help me in Q1 (i)
thanks in advance
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w09_qp_62.pdf

i think u can find mean by (39+63/2)... and i dont know about standard deviaton ... i will let u know asap

 

[x-gamer-x]

i think u can find mean by (39+63/2)... and i dont know about standard deviaton ... i will let u know asap

actually i asked abt Q1 (ii)
i miss typed

 

[rachel11]

anyone plz help me in Q1 (ii)
thanks in advance
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w09_qp_62.pdf

in second part
P(X=63)=1-0.25
P(z=63-51/sigma)=0.75
63-51/sigma=0.674
sigma=17.8
hope u get it

 

[x-gamer-x]

in second part
P(X=63)=1-0.25
P(z=63-51/sigma)=0.75
63-51/sigma=0.674
sigma=17.8
hope u get it

yea, thanks sis

 

[panoramafolks]

anyone plz help me in Q1 (ii)
thanks in advance
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w09_qp_62.pdf

(i) (39+63)/2
(ii) P(X<39)=0.25
P(X<63) = 0.75
solve using normal dist.

 

[rachel11]

yea, thanks sis

ur welcome...
can ask me for help anytime

 

[syed1995]

Good Luck for the paper everyone..! May Allah make us all get As and A*s in our papers

 

[Alice123]

Goodluck everyone!!!
syed1995 Anika Raisa Ashique A star (Butttt) Jiyad Ahsan littlecloud11 Ryan123 salvatore PhyZac @MustafaMotani rosogolla993 xarif420 Dug
@ every1 giving stats

 

[A star]

Goodluck everyone!!!
syed1995 Anika Raisa Ashique A star (Butttt) Jiyad Ahsan littlecloud11 Ryan123 salvatore PhyZac Dug
@ every1 giving stats

thankyou u know u r dead if i come to bangladesh right

 

[syed1995]

thankyou u know u r dead if i come to bangladesh right

WOW you have a beef with everyone huh?

 

[Fatima18]

I am! Its really confusing to me...

Same here.Boring and makes no sense to me.