Sample, sampled population,

and target population

• Suppose that we know the mean birth weight of
  sampled population  to be 3.27kg with  = 0.38kg


• –  = 0.23kg

All NUH

Malay live

births,

1992

All Malay live births

in Singapore (^) Sample mean = 3.5 kg
Sample sd = 0.25kg
random sample of
100 Malay live
births at NUH, 1992
X
X