S1 probability question URGENT PLS HELP!!

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#1
2011 June Edexcel S1 Q8
Why the examiner added "exactly" in part (f) and (g) but not in (e)?
This makes me think that part (e) is about Jess winning after 2 or more spins!!
But the marking scheme shows that the examiner only means Jess winning after exactly 2 spins
Am I thinking too much?

0
5 years ago
#2
(Original post by mystreet123)
2011 June Edexcel S1 Q8
Why the examiner added "exactly" in part (f) and (g) but not in (e)?
This makes me think that part (e) is about Jess winning after 2 or more spins!!
But the marking scheme shows that the examiner only means Jess winning after exactly 2 spins
Am I thinking too much?

It would be helpful to post the rest of the question.
0
5 years ago
#3
(Original post by mystreet123)
2011 June Edexcel S1 Q8
Why the examiner added "exactly" in part (f) and (g) but not in (e)?
This makes me think that part (e) is about Jess winning after 2 or more spins!!
But the marking scheme shows that the examiner only means Jess winning after exactly 2 spins
Am I thinking too much?

http://www.examsolutions.net/a-level...June/paper.php

How can a question be urgent on Christmas eve?!

I think they're using the word exactly to try and catch people out, because it's the same method for e,f,g.
0
5 years ago
#4
(Original post by mystreet123)
2011 June Edexcel S1 Q8
Why the examiner added "exactly" in part (f) and (g) but not in (e)?
This makes me think that part (e) is about Jess winning after 2 or more spins!!
But the marking scheme shows that the examiner only means Jess winning after exactly 2 spins
Am I thinking too much?

I'd guess that-
"win after 2 spins" = win on spin 1 OR win on spin 2, whereas
"win after exactly 2 spins" = win on spin 2 ONLY
0
#5
They did catch me out!!
Haha I'm having AS in January so need to work hard even on xmas eve
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