Stratum
Population
Sample Size
Food Sector
N 1 = 895
N 1 ∗ n / N = n 1 = 35
Construction Sector
N 2 = 400
N 2 ∗ n / N = n 2 = 16
Metal Sector
N 3 = 750
N 3 ∗ n / N = n 3 = 30
Wood Sector
N 4 = 350
N 4 ∗ n / N = n 4 = 14