Test of significance
- There is a less than 5% chance that a difference
of this magnitude (0.5kg) could have occurred on
either side of the distribution, if the random
sample of the 100 Malay males had come from a
population whose mean birth weight is the same
as that of the general population
-1.96 =3.0^
n
+1.96
n
0.475 0.475
SND=2.78
Regions of rejection
of H 0 at 5% level