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# Edexcel S2 17th june 2003 - help with solutions pleaSE watch

1. 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
2. (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.
3. 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
e) 1/3 between 200 and 180 ie 1/3 of all cups have <186/2/3ml
4. (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
5. (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
6. Any one? helo

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