2??6 ASL MS suggested solution(如有雷同,實屬巧合)
1(a)(i) a=9,n=2
(ii) -9<x<9
(B)(I) 1/3-X/52+x^2/648-... pp-1 for omitting "..."
(ii) same as a ii
2 a 入
=ln2 /5
b
since grestest value is only 79.713.....
so , will not
3a 22.5791
b
D一次 500 x ( t^2+8t+18)/((t+2)^4 et)
D兩次 3000(t+2)^-1e^-t + 200(t+2)^-3 e^-t + 500(t+e)^-2 e^-t
c over-estimate
4 a
median 18, iqr 13
bi
2A for correct box-and-whisker diagrams
1A for same and correct scale
pp-1 for incomplete specification
ii
the claim is correct
5
a
0.7-0.5b
b
b=0.4
6a
NORMAL-less than 50 are omitted
POISSON- merit greater than 4 are omitted
0 marks for rounding error
b
normal fits better
