Kelompok Tanpa Zat Tambahan Dengan Zat Tambahan1 11 102 9 113 12 104 9 115 8 96 9 117 10 98 9 89 10 11

10 9 811 8 1112 8 10 z-Test: Two Sample for Means13 8 914 9 9 z-Test: Two Sample for Means15 10 816 10 1017 8 10 Mean18 6 9 Known Variance19 9 8 Observations20 9 8 Hypothesized Mean Difference21 9 8 z22 7 10 P(Z<=z) one-tail23 8 10 z Critical one-tail24 8 8 P(Z<=z) two-tail25 9 8 z Critical two-tail26 7 1027 8 928 8 1129 9 930 10 10

4

Tanpa Zat Tambahan Dengan Zat Tambahan8.8 9.433333333333331.5 1.2330 30

0-2.09947955641735

0.01788732405574761.64485362695147

0.03577464811149511.95996398454005