n mean sx c tc margin of error E lower limit
upper limit
Nan kahp 12 3.21 2.66 0.9 1.8 1.38 1.83 ≤ μ ≤ 4.59
Song mahs 29 4.03 2.61 0.9 1.7 0.82 3.21 ≤ μ ≤ 4.85
Rush hour 25 5.6 3.73 0.9 1.71 1.28 4.32 ≤ μ ≤ 6.88
Viper 12 26227 15873 0.95 2.2 10085.22 16141.78 ≤ μ ≤ 36312.22





















lower upper mean





Nan kahp 1.83 4.59 3.21





Song mahs 3.21 4.85 4.03





Rush hour 4.32 6.88 5.6