Q13 (2 Viewers)

[sghguos]

Re: Guys does anyone have the answers for the probability for the hsc. Here are the Q

Can anyone confirm my answers are correct?

 

[Kieran95]

Re: Guys does anyone have the answers for the probability for the hsc. Here are the Q

Q 13 C)

Two buckets each contain red marbles and white marbles. Bucket A contains 3 red and 2 white marbles. Bucket B contains 3 red and 4 white marbles.

Chris randonly chooses one marble from each bucket

i) what is the probablility that both marbles are red

ii) what is the probability that at least one of the marbles are red

iii) what is the probability that both marbles are the same colour




My answers:

i) 9/35

ii) 26/35

iii) 9/35 +8/35 = 17/35

Those answers sound really familiar so i think i got the same.

 

[sghguos]

Re: Guys does anyone have the answers for the probability for the hsc. Here are the Q

Anyone else confirm or reject?

 

[Strangeoranges]

Re: Guys does anyone have the answers for the probability for the hsc. Here are the Q

Those answers sound really familiar so i think i got the same.

FUCK

I GOT THE WRONG ANSWER

I will probably get ~50raw if I am lucky

 

[sghguos]

Re: Guys does anyone have the answers for the probability for the hsc. Here are the Q

Lol we havent confirmed my answers are correct yet dont be sad yet.


Anyone confirm my answers?

 

[Strangeoranges]

Re: Guys does anyone have the answers for the probability for the hsc. Here are the Q

Lol we havent confirmed my answers are correct yet dont be sad yet.


Anyone confirm my answers?

I am pretty sure I am wrong

God, no one in my year is going to get a band 5 in maths. That is so bad.

 

[nerdasdasd]

Does he choose the marbles in any order or is it from A and then B?

 

[theloorloor]

Re: Guys does anyone have the answers for the probability for the hsc. Here are the Q

The hsc question is posted (exactly the same)

 

[nerdasdasd]

The hsc question is posted (exactly the same)

So A and then B?

 

[Strangeoranges]

Re: Guys does anyone have the answers for the probability for the hsc. Here are the Q

Does he choose the marbles in any order or is it from A and then B?

I read that he randomly draws 2 marbles. So i am fucked

 

[nerdasdasd]

I read that he randomly draws 2 marbles. So i am fucked

I think I did so too .../

 

[wootwoot1234]

Re: Guys does anyone have the answers for the probability for the hsc. Here are the Q

I got the same. ^ He chooses them in any order

 

[Strangeoranges]

Re: Guys does anyone have the answers for the probability for the hsc. Here are the Q

I think I did so too .../

I meant as in, that he draws either from A/B.

 

[nerdasdasd]

Oh my.... There goes 4 marks......

 

[Strangeoranges]

Re: Guys does anyone have the answers for the probability for the hsc. Here are the Q

Oh my.... There goes 4 marks......

At least you are probably going to get above 50. lol I am definetely not.

 

[Demise]

Re: Guys does anyone have the answers for the probability for the hsc. Here are the Q

Irrelevant which bag he chooses first from, since the probability will be the same in the end. I tried it in the exam with both bags, probability is the same. I'm cheering I got 4/4 for that section.

 

[wootwoot1234]

for aii) i didn't round off my answer to the nearest degree but left it in degrees and minutes. will i lose a mark?

 

[sghguos]

Re: Guys does anyone have the answers for the probability for the hsc. Here are the Q

Irrelevant which bag he chooses first from, since the probability will be the same in the end. I tried it in the exam with both bags, probability is the same. I'm cheering I got 4/4 for that section.

So do you agree with my answers?

 

[rsagar]

Re: Guys does anyone have the answers for the probability for the hsc. Here are the Q

Uh oh, I got 18/35 for i...... Nooooo I stuffed up probability ...

I know what you did... even at first i went 2(3/5 x 4/7) = 18/35 (i think - from memory)
But then i re-read the question and it said "that both marbles are red"
meaning 1st marble is drawn from Bucket A
and 2nd marble is drawn from Bucket B

So i changed it to 9/35

 

[sghguos]

Re: Guys does anyone have the answers for the probability for the hsc. Here are the Q

Can someone confirm my answers.....