r) m.a 1| + 5.t4 3
0
z= x4
too * a(]8 _ -o,32
,s
6
P(x
( o.=13, o,-7G,7)
b) 16s irTrrndio\ see.rvlg f" decv-ec,"ge_ the isk of *". .,.\r bo3 f*it,t,
bccterre- perhcrpsthere- 6eR- o*\e-cfotors, Suc[ c,,.sse_"f,be-\\s., +hd\ ted 1. thE- Aqd\ { }he chr[d.
t) pfl.343
{+ ?-3Lt
\nJ,th;,t ond 5' tJih unkno*n ond o. s*oll Sornp{esize ( n =as ), cL too(l - X) "/" pr"6.6ilrtg irilenv"lf'r t is qrven Dq ( tt.Gf ,7q. 8) "15.t-l o^d t- c*pe;f thiS expertrnenl ovef llrterpretdion; ff \^)e ^^Je,ce, theq the irit-enn'l o\e-f rnang trneS, each trrne- Covnpt-^tr5 'rr:,t\ e*qtrte- *he-
r.ugh[39C'/'4+h"t"nethei'itevctls *rhi€ woc>dva\qe.( the- 'rteon bre*kin3 sTr"n3th{ the-
8) m" 3alt x=
# 7,3-l
2*,=
n 3,'"1
= 1.O73 +(m5+o.83+t,?O+o,81+1,15+l.la)=C,:l'l 6 G
s'=)-f 2 x\--nx{ n- t J Lf ,
= f , Iio,qs'+o,E*+l.aot+ r l,L(sz* o.8?2 (,Dz) -'J / - G(t.on)1 g-l t
= o'os3G 3=$=-ffif5f,= a) With Jt ord 62
o"E3lG bfth uo-,kno,on ond o. s*ot( ssrnp\es\ze (n=c),
o. roo(t-N)'/ pr"bab\l$girilerva\ f'r "zr is 3rven bS,
Vt tu,
"S-
2 ft-t\ .[n
6r a. 1;'/, .or,{Uenceirte.o"l ; g- ^ o g _ o .o a 5 t c,o( t - x) =gS A
t- b(= o.g5 X =O ,OS
A
d f= n-( =6-{=5
F"* tob\e_: to,oas= p,Sl I ,'*then df =S l.o73 t ),Sll -o_.a316
^Ja
I .a 7 3 t6 .a r J3 .+
(o.e 3 ,t3 1 6 .+
e-KFe-srne.ft oler Trf,ecpc6ta\r.,^". f{ t.,retiefa t- repe-nt thrs a.,d ove( rrlc\n$trnes, ec\ch t,rne. .-o"ptf,5 the- intefvol,
then **.hty
q6'/" -f
tn'tes the i'f,evo\S zcill c*$ufe-
the- vo\tre- { the- trcre cl!^efir3e- decog {efe- { frn* p"'tic\eS pr"dUced f"* oVev1 cookinq oc tocrs*,n3 .
b) "15 '/" c.,Sf,g; " imp\ies+hS fie- \"hesvo\su:itl c*Ssre- *he\o.\qq
.t
q57' the- o.re{ofQ-
{
*he' t'rtte- '
decoSaf.s c) 1he dish6utonuf th* populc,.fion { norrnaltgdistfibrdee\.
-**s\ be,