****Leaving Certificate: Higher Level Maths Discussion****

aleatorio

BlueWolf16 wrote: »

those who are confident with what they did, any chance you could say what the answers were? Feeling quite confident I passed it, but as I failed paper 1, I'm hoping I did enough to pass overall.

Also, on q6(a), the second part where you are asked to draw an angle of 60degrees without protractor, would I get any marks if I just drew it with a protractor, and added some bullcrap working lines? That's what I did anyways.

Ummm in the last q one of the radii was root2 and the other was 4root 2,
And I'm hoping against hope that the length l in the square part was 17

Daledge

Beautiful paper, question 6 was amazing.

ian5005

for the question to do with the sine graph, was the range [511.-511] or something like that? it was a good paper as opposed to paper 1.

aleatorio

ian5005 wrote: »

for the question to do with the sine graph, was the range [511.-511] or something like that? it was a good paper as opposed to paper 1.

The range was whatever was infront of the sin in f(x), I can't remember it but 511 sounds familiar

Peregrine

Did I dream that..?

That did happen, right?


WOOOOO

Didn't finish it but still a lovely paper, possibly easier than Examcraft P2.

Daniel2590

That was way harder than either of the mock paper 2s

aleatorio

Nimrod 7 wrote: »

Did I dream that..?

That did happen, right?


WOOOOO

Didn't finish it but still a lovely paper, possibly easier than Examcraft P2.

No it wasn't. Omg Nim stfu I got an A1 on examcraft p2 and feel violated by whatever the hell it was we just sat :pac:

Peregrine

aleatorio wrote: »

No it wasn't. Omg Nim stfu I got an A1 on examcraft p2 and feel violated by whatever the hell it was we just sat :pac:

But it was so lovely Granted, there were a few tough parts but in general, I thought it was good.

What did you find hard about it?


No, not that >.<

Edit: Just saw your post on the last page. Hang on, I'll read it now.

little sis...

I am honestly amazed at the people who thought it was a good paper.

There was NO full question that I was happy with other than the theorem one.

They expect you to think for a load of those and yet don't give you time to?
I was making up random nonsense for some of it and left a few parts half done... puts me in a really bad mood for the rest of exams

BlueWolf16

What did you guys get for q7 (i think), the last part, about Drug B? in the previous part I said that Drug A treats more patients than the generic drug, (I think it was something around 57%-63%).. If I remember correctly, I just took the maximum value I got in the previous part, which was like 63.xx % and multiplayed that by 500..

also in the q6, what did you say about the statement "something something, government's income and expenditure, something". Myself, I did this part with like 30sec. left, and said that as the numbers changed from 2006 to 2011 it would be more difficult to calculate the income and expenditure as numbers changed. Also noted that the gov. income was tax, and expenditure was social welfare..

aleatorio

Nimrod 7 wrote: »

But it so lovely Granted, there were a few tough parts but in general, I thought it was good.

What did you find hard about it?


No, not that >.<

The last part of the coordinate geometry q had me stumped, as did the last part of the luna question, the hypothesis testing second part about drug B was like wtf and and there was way too much opinion needed that I'm not very good at doing
My confidence in probability is also a bit shakey so I may easily have gotten all of the probability calculations wrong in the drug q and spinner q


Wehhhhh!

LeavingCertee

little sis... wrote: »

I am honestly amazed at the people who thought it was a good paper.

There was NO full question that I was happy with other than the theorem one.

They expect you to think for a load of those and yet don't give you time to?
I was making up random nonsense for some of it and left a few parts half done... puts me in a really bad mood for the rest of exams

hear, hear! The woman speaks sense! What about the 45 marks for waffling on about the economy, we still have that?..

forlifebaby

aleatorio wrote: »

Q1 - lovely
Q2 - if the angle was 2.5 radians, then lovely q, if not, ****
Q3 - can't tell of I liked that or not..
Q4 - EWEWEW (c) with the finding m and c was impossible
Q5 - lovely trig q, found iYout nice and handy I think was the value of b or whatever it was in the Sin(b)theta 2pi for when it was to be 60 periods per second?
Q6 - beautiful

The statistics Q was ok, I think very opinion based ><
The probability was meh, couldn't work out the last part
Last q was lovely except for the verrrryyyy last part, ran out of time so it was a bit dodgy and half finished did anyone else get 17 for l in the square question?

I am sure I got 2.5 as radian too. the probability was pretty nice except for that 25 mark one. I had no idea what was going on but you had to use Bernoulli's trial to get the answer.

The last question was rather lengthy. I think I got l to be 14.5 I can't remember exactly. But I have a feeling that I might be wrong. As I had left that part for the last five minutes.

Overall this was a beautiful paper compared to part 1. paper 1 was a shock to my system.

TooMuchStudy

ian5005 wrote: »

for the question to do with the sine graph, was the range [511.-511] or something like that? it was a good paper as opposed to paper 1.

It was (311,-311)

BlueWolf16

TooMuchStudy wrote: »

It was (311,-311)

fairly sure it was -551,551.

aleatorio

BlueWolf16 wrote: »

What did you guys get for q7 (i think), the last part, about Drug B? in the previous part I said that Drug A treats more patients than the generic drug, (I think it was something around 57%-63%).. If I remember correctly, I just took the maximum value I got in the previous part, which was like 63.xx % and multiplayed that by 500..

also in the q6, what did you say about the statement "something something, government's income and expenditure, something". Myself, I did this part with like 30sec. left, and said that as the numbers changed from 2006 to 2011 it would be more difficult to calculate the income and expenditure as numbers changed. Also noted that the gov. income was tax, and expenditure was social welfare..

I said the same thing for the government q, I said the numbers in work had decreased which decreased income from tax, and the number unemployed had increased which meant more expenditure on social welfare :P

For the two groups who wouldn't be part of the labor force I said disabled people and people in full time education.. Any validity there?

peekachoo

Holy crap!!! Amazing except the end of the paper 9!!!!



are they gonna mark it hard now??

Peregrine

aleatorio wrote: »

Q1 - lovely
Q2 - if the angle was 2.5 radians, then lovely q, if not, ****
Q3 - can't tell of I liked that or not..
Q4 - EWEWEW (c) with the finding m and c was impossible
Q5 - lovely trig q, found it nice and handy I think was the value of b or whatever it was in the Sin(b)theta 2pi for when it was to be 60 periods per second?
Q6 - beautiful

The statistics Q was ok, I think very opinion based ><
The probability was meh, couldn't work out the last part
Last q was lovely except for the verrrryyyy last part, ran out of time so it was a bit dodgy and half finished did anyone else get 17 for l in the square question?

Q1 - Grand
Q2 - I got 2.5 radians as well.
Q3 - I forgot what it was Probability? It was a bit iffy but I got 0.2 for the last part
Q4 - Part 2 was horrible, didn't finish it
Q5 - I didn't get the last part, rest was fine
Q6 - Theorem 13. Need I say more?

Q7 - It took a bit of careful reading but it was fine. I didn't get to finish the prediction for 2014
Q8 - It was fine. For hypothesis test, I got Drug A was more effective. What was the last part?
Q9 - Nice question but same as you, I ran out of time and didn't get to the last part. I think I got 13 for the square one, I may have messed that up.

BlueWolf16

aleatorio wrote: »

I said the same thing for the government q, I said the numbers in work had decreased which decreased income from tax, and the number unemployed had increased which meant more expenditure on social welfare :P

For the two groups who wouldn't be part of the labor force I said disabled people and people in full time education.. Any validity there?

yup, wrote the exact same thing, disabled people and those in school/college for those not in labor force.

forlifebaby

BlueWolf16 wrote: »

What did you guys get for q7 (i think), the last part, about Drug B? in the previous part I said that Drug A treats more patients than the generic drug, (I think it was something around 57%-63%).. If I remember correctly, I just took the maximum value I got in the previous part, which was like 63.xx % and multiplayed that by 500..

also in the q6, what did you say about the statement "something something, government's income and expenditure, something". Myself, I did this part with like 30sec. left, and said that as the numbers changed from 2006 to 2011 it would be more difficult to calculate the income and expenditure as numbers changed. Also noted that the gov. income was tax, and expenditure was social welfare..

Is that how you get that bit of drug b? Damn I think I used 49% cuz drug a was the successfully one t

siobhaanx

Don't understand how anyone found that easy when everyone was complaining about the first paper, I actually liked the first paper but I thought the majority of that was horrible, only questions I'm confident about are 1 and the theorem

forlifebaby

BlueWolf16 wrote: »

What did you guys get for q7 (i think), the last part, about Drug B? in the previous part I said that Drug A treats more patients than the generic drug, (I think it was something around 57%-63%).. If I remember correctly, I just took the maximum value I got in the previous part, which was like 63.xx % and multiplayed that by 500..

also in the q6, what did you say about the statement "something something, government's income and expenditure, something". Myself, I did this part with like 30sec. left, and said that as the numbers changed from 2006 to 2011 it would be more difficult to calculate the income and expenditure as numbers changed. Also noted that the gov. income was tax, and expenditure was social welfare..

Is that how you get that bit of drug b? Damn I think I used 49% cuz drug a was the successfully one (51%). ugh. This is annoying me now.

I think I said that: black economy has increased and social welfare payment has also increased. And I said something about % difference.

Daniel2590

BlueWolf16 wrote: »

fairly sure it was -551,551.

No it was [-311,311]

aleatorio

Nimrod 7 wrote: »

Q1 - Grand
Q2 - I got 2.5 radians as well.
Q3 - I forgot what it was Probability? It was a bit iffy but I got 0.2 for the last part
Q4 - Part 2 was horrible, didn't finish it
Q5 - I didn't get the last part, rest was fine
Q6 - Theorem 13. Need I say more?

Q7 - It took a bit of careful reading but it was fine. I didn't get to finish the prediction for 2014
Q8 - It was fine. For hypothesis test, I got Drug A was more effective. What was the last part?
Q9 - Nice question but same as you, I ran out of time and didn't get to the last part. I think I got 13 for the square one, I may have messed that up.

Q2 yeah that was the spinner one with the expected payout and stuff, spinner B was better for the charity yeah?
I can't remember what I got for the last part
I agree that Q4 was horrible

For 2014 I feel I made my prediction a bit simple.. I just found the difference between 2012 and 2013 and added it on to 2013 and wrote (assuming a linear relationship) beside it :pac:
I got drug A too woooo :L

forlifebaby

aleatorio wrote: »

I said the same thing for the government q, I said the numbers in work had decreased which decreased income from tax, and the number unemployed had increased which meant more expenditure on social welfare :P

For the two groups who wouldn't be part of the labor force I said disabled people and people in full time education.. Any validity there?

Yeah and I think retired elderly would be included in it too.

Popkornetto

I've not seen the paper but, reading some of the comments, it's sounding like this was very close to being an economics paper.

Theorem 13, though - I bet you were all delighted when you saw that!

Edit: For "not in the labour force", if I remember correctly, the following groups count:
1. Retired people,
2. Children under the age of 16,
3. Those in full-time education who are not looking for a job,
4. Disabled people - or people who are otherwise unable to look for a job,
5. People who have not actively searched for a job in the past 4-6 weeks.
In brief, anybody between the ages of 16 and 64 who is not employed or looking for a job.

Of course, depending on how the question was phrased (there are a few very slightly different definitions of "labour force"), some of these might not be correct answers to the question.

Peregrine

BlueWolf16 wrote: »

lso in the q6, what did you say about the statement "something something, government's income and expenditure, something". Myself, I did this part with like 30sec. left, and said that as the numbers changed from 2006 to 2011 it would be more difficult to calculate the income and expenditure as numbers changed. Also noted that the gov. income was tax, and expenditure was social welfare..

More people employed = more revenue for the govt through income tax, more VAT from increased public spending and fewer people unemployed meaning less money spent on social welfare.

Any of those 2 would get you marks.

aleatorio

Daniel2590 wrote: »

No it was [-311,311]

Was 311 the number infront of the sintheta part? If so, it was definately 311!

FHB

I got 13 for the square side length too.

I think for drug b, you're supposed to take the generic drug's probability of being successful(0.51) and add on the margin of error.(Like in the confidence interval) Because that would be the maximum value drug b could have and still be within the range that causes you to accept the null hypothesis.

Then multiply that number by 500. (I think I got 255?)

Mario95

God, I hate this unpure, ugly, man-made, manufactured, pseudomathematical statististics and probability stuff.

P2 killed any hopes I had of getting an A1

Peregrine

aleatorio wrote: »

Q2 yeah that was the spinner one with the expected payout and stuff, spinner B was better for the charity yeah?
I can't remember what I got for the last part
I agree that Q4 was horrible

Umm..There was probably one that was better for the charity but I don't think they expected you to work it out.

I wrote spinner A because it has a higher chance of not winning anything. Why did you say B?

As long as you have a valid point, you should get the marks for it.

aleatorio

Nimrod 7 wrote: »

Umm..There was probably one that was better for the charity but I don't think they expected you to work it out.

I wrote spinner A because it has a higher chance of not winning anything. Why did you say B?

As long as you have a valid point, you should get the marks for it.

I worked out the expected value (pay out per turn) and spinner B paid out less overall so I said that was better as their profits would be higher..?

peekachoo

Nimrod 7 wrote: »

Umm..There was probably one that was better for the charity but I don't think they expected you to work it out.

I wrote spinner A because it has a higher chance of not winning anything. Why did you say B?

As long as you have a valid point, you should get the marks for it.

Spinner B had a lower expected value meaning more money was going to the charity so I said that one!

Peregrine

aleatorio wrote: »

I worked out the expected value (pay out per turn) and spinner B paid out less overall so I said that was better as their profits would be higher..?

Was there even enough space for that? :P

I just saw "Give a reason why you think" or something and just gave an opinion.


The last part was a Bernoulli trial, right?

aleatorio

Nimrod 7 wrote: »

Was there even enough space for that? :P

I just saw "Give a reason why you think" or something and just gave an opinion.


The last part was a Bernoulli trial, right?

Sure it was just (1/5) times each of the values added together, or (1/6) times each of values added together

Yeah

little sis...

I was so disappointed I couldnt get the radians in q2... how did u's do it ? I had l=r(theta) and then was stuck after that?

TooMuchStudy

little sis... wrote: »

I was so disappointed I couldnt get the radians in q2... how did u's do it ? I had l=r(theta) and then was stuck after that?

Let the length Kate ran = (R+0.6)angle + 3 and let the length Helen ran = (R+1.8)angle and equate them

Peregrine

little sis... wrote: »

I was so disappointed I couldnt get the radians in q2... how did u's do it ? I had l=r(theta) and then was stuck after that?

I let the inner circle's radius equal to r

l = (r + 0.6)ϑ for the first one
l = (r + 1.8)ϑ for the second one

The larger one was 3m longer so
ϑr + 0.6ϑ + 3 = ϑr + 1.8ϑ
1.2ϑ = 3
ϑ = 2.5 rads

aleatorio

Nimrod 7 wrote: »

I let the inner circle's radius equal to r

l = (r + 0.6)ϑ for the first one
l = (r + 1.8)ϑ for the second one

The larger one was 3m longer so
ϑr + 0.6ϑ + 3 = ϑr + 1.8ϑ
1.2ϑ = 3
ϑ = 2.5 rads

I'm so relieved I got that right
I'm bad with radians so when I got 2.5 I was like eh wat. That's tiny
Now I understand that it makes sense... :pac:

Peregrine

aleatorio wrote: »

I'm so relieved I got that right
I'm bad with radians so when I got 2.5 I was like eh wat. That's tiny
Now I understand that it makes sense... :pac:

Or maybe we all got it wrong

It does make sense though, should be okay.

aleatorio

Nimrod 7 wrote: »

Or maybe we all got it wrong

It does make sense though, should be okay.

Nah sure that's like 140ish degrees which is plausible :P

allyb17

What did people get for how many ways the guy won 8 euro from spinner A I got 10 but I reckon it's wrong :L I'm awful with permutations

Peregrine

aleatorio wrote: »

Nah sure that's like 140ish degrees which is plausible :P

Yeah, it looked like the right angle.

FHB wrote: »

I got 13 for the square side length too.

Same. I got 12.2 or something. Rounded it up to 13 because it said smallest whole number.

Everyone I ask got different numbers. 10, 14, 17.

iFreeley

Only one way he could get 8 euro on the spinner, that was getting 5 euro and 3 euro i think

james142

What the fu*k was "circle j"?!

allyb17

iFreeley wrote: »

Only one way he could get 8 euro on the spinner, that was getting 5 euro and 3 euro i think

But he played it 4 times so he may have got 5 then 3 on first and second go, I got 10 different ways he could have got 5 and 3?

iFreeley

allyb17 wrote: »

But he played it 4 times so he may have got 5 then 3 on first and second go, I got 10 different ways he could have got 5 and 3?

didnt think of that

FHB

allyb17 wrote: »

What did people get for how many ways the guy won 8 euro from spinner A I got 10 but I reckon it's wrong :L I'm awful with permutations

I thought that question was a bit unclear. By "ways" did they mean combinations, or combinations including orders?

Like, there were three combinations which gave you €8. €5, €3, first €0, second €0. €5, €3, first €0, first €0. And €5, €3, second €0, second €0.

But then are you supposed to multiply 3 by 4! to get the possible orders as well? That's what I did anyway.

aleatorio

allyb17 wrote: »

What did people get for how many ways the guy won 8 euro from spinner A I got 10 but I reckon it's wrong :L I'm awful with permutations

I got 24 I just did 4P4


For the circle square q I'm like 96% sure that l is 17 after doing out the q again

Peregrine

allyb17 wrote: »

But he played it 4 times so he may have got 5 then 3 on first and second go, I got 10 different ways he could have got 5 and 3?

I got 12.

I'm after writing out 12 possibilies too and I can't think of any more.

5300
5030
5003

3005
3500
3050

0053
0035
0503
0530
0350
0305