Summary Week 1 of STA2020F (ANOVA)

WEEK ONE

14102/2023




T- test

We have 2 groups with the
following info on each




DATA:



Er I Gr 2




ni, i, si n2, 2,52


hi n 2 is necessary
=

not




HYPOTHESIS



HO:M1 M2
=




H1:M1 M2
=


two-sided




E
M, > Nz
one-sided
u,<M2



AnueMPTION
-> We assume thatthere is a common variance of between groups 132

..if S? S2, it
is justby chance
=




(there is still way to perform attest
i fthis does
a assumption hold)
not