How was your statistics paper 1.. (9709/62)

[Biocalife]

the tree diagram its not logical to have 1/3 for each try i think. rather ive started by 3 branches namely A1 A2 and A3 and broke them into 2 (right and wrong) anyone did this ?

 

[Biocalife]

you think my reasoning zero marks ? ive got E(x)=1.88

 

[Biocalife]

and the arrangement ive got 6!x7

 

[Crimson-Saint]

the tree diagram was like the one where the question said that someone tries to call his friend if you remember, idk how to post a pic on here so just imagine the first branch correct (1/3) wrong (2/3) then from the wrong branch another 2 options correct (1/2) wrong (1/2) then from the wrong branch another branch correct (1) wrong (0)
It stops everytime he answer is correct, tries again if wrong and like without replacement prob
And the variable x was 1,2,3 p(X=x) all 1/3, e(x)=2
I think this was one of the easiest questions

lols ur right.....i was actually paranoid of the thought of a question being this easy....that i rechecked multiple times to make sure i wasn't missing anything xD

 

[Biocalife]

tell me

 

[#T-wayne]

how many marks did number 3 and number 4 contain?

 

[B!(+)(+)dy $k(_)!!]

i got 16cm for height but i am sure i could not have missed if they have mentioned more than........idk !! but its just 2 marks so CHILL!

2 marks are very much

 

[B!(+)(+)dy $k(_)!!]

Guys how did u solve question 1.....that was the one of the toughest question I find.....but no one is discussing about it......and my h was 21.5......I hope I m right...

1st question was soo easy mhann.. It was 48C43
And the h is 21.5? How did you do it?

 

[B!(+)(+)dy $k(_)!!]

how many marks did number 3 and number 4 contain?

3rd question - 7 or 6 marks
4th question - 8 marks

 

[B!(+)(+)dy $k(_)!!]

I got 21.5 but i dnt knw if thats right

Yuppp... It's right..
Please explain...!!

 

[B!(+)(+)dy $k(_)!!]

Guys can you post the serially what the questons and then give expected answers

1st - 48C43
2nd - 6! x 5!
- 6! x 7P4
3rd - 1/324
- 0.0212
4th - Tree diagram
- E(X) = 2 attempts
5th - P(X<8) was easy to find
- q was 7.74
- P(X<4 mean) = 1 - P(X<2)
6th - cumulative frequency graph
- h = 15.6 cm or 21.5 cm (not sure)
- SD = 6.01
7th - binomial distribution (4<=X<=6)
- Normal distribution P(X<114.5) dont remember
- np > 5 and nq >5

 

[Rahi Khan]

Any one remember about question 7

 

[Rahi Khan]

I wannaa match up cos may be i was wrong

 

[iraj11]

1st - 48C43
2nd - 6! x 5!
- 6! x 7P4
3rd - 1/324
- 0.0212
4th - Tree diagram
- E(X) = 2 attempts
5th - P(X<8) was easy to find
- q was 7.74
- P(X<4 mean) = 1 - P(X<2)
6th - cumulative frequency graph
- h = 15.6 cm or 21.5 cm (not sure)
- SD = 6.01
7th - binomial distribution (4<=X<=6)
- Normal distribution P(X<114.5) dont remember
- np > 5 and nq >5

What were the questions??

 

[B!(+)(+)dy $k(_)!!]

What were the questions??

Actually, I don't have the question paper wid me...
If I wud have, I wud definitely tell you the questions
I don't even remember... Don't worry now...
What's done is done...!!
Concentrate on ua next papers...

 

[B!(+)(+)dy $k(_)!!]

Find 28% of the total frequency.....then minus this 28% from the total frequency.....then draw a line on the new frequency to get h.......I got question 1 correct Yeaaa......how did u solve 5 ii....can u upload a pic of it...plss

Ohhh yeah...
Ummm... I need to do Eco bro..
So not possible..
Sorry

 

[Rahi Khan]

question no 7 any one remember can u pls solve it

 

[B!(+)(+)dy $k(_)!!]

question no 7 any one remember can u pls solve it

The normal distribution..? three quarters adult own a cell phone that one?

 

[Keisuke Honda]

Hey is it ok to ask about the questions? 24 hours has passed right?

 

[shafin345]

Question 6 the cumulative graph, was the values x less than or x less than equal to.
i mean the sign < or 《