Edexcel S2 17th june 2003 - help with solutions pleaSE Watch

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shilpashilpa
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Hey guys, anyone who has done the 17th june 2003 S2 paper, please help me with the solutions! I have a mock this Thursday, and m stuck with lots of it, don’t have any answers, so not even sure if what I m doing is any good… really appreciate it if anyone with the paper could confirm my answers & help me with the one’s I cant get! Thanks

1. that’s ok
2. a) n is large & p is small
b) 0.6064
3. STUCK with this one – any clues?
4. a) fine all 4 uses!

b) i) 32/729 or 0.0439
ii) 2.185
5. I really hope this is the rectangular distribution!

a) p.d.f – 1/20 180 < X < 200
0 o/w
b) i) 1.02
stuck with the rest of this question!!!!!!

Havent tried question 6 yet! And question 7 was in one of my tests so that’s ok!!

Would really be greatful for any help/solutions on this paper.. Thanks! Unfortunately mr Hughes doesn’t have them yet
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GH
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(Original post by shilpashilpa)
Hey guys, anyone who has done the 17th june 2003 S2 paper, please help me with the solutions! I have a mock this Thursday, and m stuck with lots of it, don’t have any answers, so not even sure if what I m doing is any good… really appreciate it if anyone with the paper could confirm my answers & help me with the one’s I cant get! Thanks

1. that’s ok
2. a) n is large & p is small
b) 0.6064
3. STUCK with this one – any clues?
4. a) fine all 4 uses!

b) i) 32/729 or 0.0439
ii) 2.185
5. I really hope this is the rectangular distribution!

a) p.d.f – 1/20 180 < X < 200
0 o/w
b) i) 1.02
stuck with the rest of this question!!!!!!

Havent tried question 6 yet! And question 7 was in one of my tests so that’s ok!!

Would really be greatful for any help/solutions on this paper.. Thanks! Unfortunately mr Hughes doesn’t have them yet
Hello can u tell me how to get to mr hughes? And the password, cause the site i dont think is working.
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kikzen
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3a) its binomial
b)work out x = 0 thru to x = 4 then draw a graph
c)use the graph
d)e(x) = np
var(x) = npq

4b)i- it needs to be : not 5, not 5, not5, not 5, not5, is 5. (ie thats wrong)
ii-this is binomial n=8, p = 2/7

5.a)180-183 = 3/20
b)1/20
(if in doubt, integrate)
c)IQR = Q3-Q1
=[180 + (.75)(20)] - [180 + (.25)(20)]
= 10
d)not sure about this tbh
e) 1/3 between 200 and 180 ie 1/3 of all cups have <186/2/3ml
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shilpashilpa
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(Original post by 2776)
Hello can u tell me how to get to mr hughes? And the password, cause the site i dont think is working.
Yea sure check this threat out
http://www.uk-learning.net/showthrea...6&goto=newpost
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shilpashilpa
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(Original post by kikzen)
3a) its binomial

(4, 0.20) ?

b)work out x = 0 thru to x = 4 then draw a graph

i m still unsure abt how to draw this graph!! do P(X=0) --- till 4 and then plot it against the probability?

c)use the graph

hmm would that be the highes X value -- the mode maybe?
Thanks soooo much! Really appreciated
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shilpashilpa
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Any one? helo
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