Statistics - T-TEST, F-TEST, Z-TEST

三個test在不同的地方應用的:
z-test: sample size large, known population s.d.
t-test: sample size small, un/known population s.d.
f-test: variance test來的, 比較至少兩個group的variance是不是statistical significant

在你提供的information來看, 你應該用 t-test, test sample mean against 一個你設定的value...