How was 9709_w15_qp_62?

[Albert Lianto]

1. n = 22
2. 9C6 / 16C6 = 3/286
3.(i) 1/4
(ii) 27/256 or 0.105 or (0.25)(0.75)^3
(iii) 3/32 or 0.09375
4.(i) 30
(ii) 480
5. IQR = probably 19? Forgot my answer
think my mean was 103 kg-ish tho
6. A {1, 2, 3, 3}
B {-3, -2, -1, 1}


A
| 1 2 3 3
_____________
-3 | -2 -1 0 0
B -2 | -1 0 1 1
-1 | 0 1 2 2
1 | 2 3 4 4

p(X = -2) = 1/16
p(X = -1) = 1/8
p(X = 0) = 1/4
p(X = 1) = 3/16
p(X = 2) = 3/16
p(X = 3) = 1/16
p(X = 4) = 1/8

Var(X) = 23/8
p(even | positive integer) = 5/9
7. Think it was 316 days, 0.840 and 0.933

 

[jason cwy]

I think there was a mistake in the last question right? (7iii) They gave X but asked for Y.

I found it kind of easy except i did a mistake for the first question.

Good luck for P3!

 

[Anum96]

My answers:
1)22
2)84/8008
3)1/4, (3/4)^4 x 1/4, (1/4)
4)i) 60,
5)IQ: 19, 103.4
6) Var(X)= 2.875,
7)316 days, binomial part= 0.840, 0.933
don't remember the remaining

I got IQ 18 :/
109-91

 

[The Sarcastic Retard]

I think there was a mistake in the last question right? (7iii) They gave X but asked for Y.

I found it kind of easy except i did a mistake for the first question.

Good luck for P3!

I didn't noticed that mistake, I continued solving. I even got the ASNWER :3

 

[The Sarcastic Retard]

I got IQ 18 :/
109-91

I got IQ as 18 too. And weight of 16th student to be 103.4.

 

[jason cwy]

I

I didn't noticed that mistake, I continued solving. I even got the ASNWER :3

didnt notice it too actually..then some friends told me about it..i got the answer too xD

 

[The Sarcastic Retard]

I

didnt notice it too actually..then some friends told me about it..i got the answer too xD

Same pinch bruh!

 

[Sean Tan]

Stats for Variant 3 was very easy too!! The questions were very similar to the past years and nothing new.
Easiest paper for me so far!

 

[Autoriz]

SHUT UP. No more discussion

 

[The Sarcastic Retard]

Stats for Variant 3 was very easy too!! The questions were very similar to the past years and nothing new.
Easiest paper for me so far!

True that.

 

[The Sarcastic Retard]

SHUT UP. No more discussion

 

[Sean Tan]

SHUT UP. No more discussion

 

[Autoriz]

No you would not consider zeros

 

[Autoriz]

This ' Sarcastic retard has bluffed up his paper'. HAHAHA

 

[The Sarcastic Retard]

No you would not consider zeros

U sure?

 

[The Sarcastic Retard]

This ' Sarcastic retard has bluffed up his paper'. HAHAHA

 

[The Sarcastic Retard]

Hehe, I bluffed up, BINGO

 

[Mahreen Mustafa]

I thought that was printing mistake it isn't??

Me too

 

[awesomaholic101]

I didn't noticed that mistake, I continued solving. I even got the ASNWER :3

So that WAS a mistake? I got 0.933 too

 

[The Sarcastic Retard]

So that WAS a mistake? I got 0.933 too

hehe... Maybe. .