u₂: customs brokerage service at DMK

v₁

normally = H = 0.9

v₂

very = H² = 0.81

v₃

a little = H^1/2 = 0.95

number of experts

4

0

16

u₂

mean

Standard

deviation

sample size

confidence level

confidence interval

0.94

0.020519567

20

0.95

0.9400 ± 0.009

result of calculation: u₂ ≈ v₃