Kelompok Tanpa Zat Tambahan Dengan Zat Tambahan1 10 92 10 83 9 104 9 115 8 96 9 117 10 98 9 89 10 11

10 9 811 8 1112 8 1013 8 914 9 915 10 816 10 1017 8 1018 8 919 9 820 9 821 9 822 7 1023 8 1024 8 825 9 826 7 1027 8 928 8 1129 9 930 10 10

z-Test: Two Sample for Means

Tanpa Zat Tambahan Dengan Zat TambahanMean 8.76666666666667 9.3Known Variance 1.5 1.23Observations 30 30Hypothesized Mean Difference 0z -1.76798278435146P(Z<=z) one-tail 0.0385318908801537z Critical one-tail 1.64485362695147P(Z<=z) two-tail 0.0770637817603075z Critical two-tail 1.95996398454005

32 35 t-Test: Two-Sample Assuming Unequal Variances37 3035 29 Metode Standar25 25 Mean 3441 34 Variance 37.7544 40 Observations 927 27 Hypothesized Mean Difference 031 32 df 1534 31 t Stat 1.00644167462559

P(T<=t) one-tail 0.165081768536094t Critical one-tail 1.75305035569257P(T<=t) two-tail 0.330163537072188t Critical two-tail 2.13144954555977

Metode Standar

Metode baru

Metode baru31.444444444444420.2777777777778

9

SAE70 SAE8045 48 t-Test: Paired Two Sample for Means50 5662 63 SAE7035 35 Mean 48.464 66 Variance 102.9714285714353 53 Observations 1553 55 Pearson Correlation 0.989023178363453 54 Hypothesized Mean Difference 032 33 df 1433 33 t Stat -3.439574236227155 58 P(T<=t) one-tail 0.001993219955260 63 t Critical one-tail 1.761310135774942 43 P(T<=t) two-tail 0.003986439910444 45 t Critical two-tail 2.144786687917845 44

SAE8049.93333333333118.6380952381

15