Kelompok Tanpa Zat Tambahan Dengan Zat Tambahan1 11 102 9 113 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

4

z-Test: Two Sample for Means

Tanpa Zat Tambahan Dengan Zat TambahanMean 8.76666666666667 9.43333333333333Known Variance 1.5 1.23Observations 30 30Hypothesized Mean Difference 0z -2.20997848043932P(Z<=z) one-tail 0.0135533279131388z Critical one-tail 1.64485362695147P(Z<=z) two-tail 0.0271066558262776z Critical two-tail 1.95996398454005

32 35 t-Test: Two-Sample Assuming Unequal Variances37 3035 29 Metode Standar Metode baru25 25 Mean 36 31.444444444444441 34 Variance 42.25 20.277777777777844 40 Observations 9 945 27 Hypothesized Mean Di 031 32 df 1434 31 t Stat 1.72832775738902

P(T<=t) one-tail 0.052955134834995t Critical one-tail 1.76131013577489P(T<=t) two-tail 0.105910269669991t Critical two-tail 2.1447866879178

Metode Standar

Metode baru

SAE70 SAE80 t-Test: Paired Two Sample for Means45 4850 56 SAE70 SAE8062 63 Mean 48.4 49.933333333335 35 Variance 102.97142857 118.63809523864 66 Observations 15 1553 53 Pearson Correlation 0.989023178453 55 Hypothesized Mean Difference 053 54 df 1432 33 t Stat -3.439574236233 33 P(T<=t) one-tail 0.0019932255 58 t Critical one-tail 1.761310135860 63 P(T<=t) two-tail 0.003986439942 43 t Critical two-tail 2.144786687944 4545 44