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S.L.    Tails z-criticalx1      x2    s1   n1 s2     n2   stan. Err z
   0.01 Left    -2.326     29000 29700 600   30  900...
S.L.     Tails t-critical x1          x2           s1          n1        s2          n2        stan. Err t
   0.100 Left  ...
Second Sample                                                          Critical
First Data    Data    Size     d         d...
Sig Level Critical Score x1     n1     x2     n2    P-bar Q-bar p1^     p2^   Z-Score
      0.05          -1.645  178    3...
Advanced Confidence Intervals

Z-Test

  Conf    Critical                                                     Stan     Lef...
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Chapter 8

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Chapter 8

  1. 1. S.L. Tails z-criticalx1 x2 s1 n1 s2 n2 stan. Err z 0.01 Left -2.326 29000 29700 600 30 900 40 179.583 -3.898 S.L. Tails z-criticalx1 x2 s1 n1 s2 n2 z 0.020 Right 2.054 11.08 10.2 2.2 100 2 100 0.297 2.960 S.L. Tails z-criticalx1 x2 s1 n1 s2 n2 z 0.05 Two 1.960 12.55 11.22 2.12 45 1.89 38 0.44 3.021 z-critical -1.960
  2. 2. S.L. Tails t-critical x1 x2 s1 n1 s2 n2 stan. Err t 0.100 Left -1.306 23.1 25.3 8.69 14 0.21 23 1.796 -1.225 Pop Var= S.L. Tails t-critical x1 x2 s1 n1 s2 n2 stan. Err t 0.1 Left -1.350 574 734 185 14 268 23 74.615 -2.144 Pop Var ≠ S.L. Tails t-critical x1 x2 s1 n1 s2 n2 stan. Err t 0.03 Right 2.048 12.1 12.27 2.4 5 2.5 25 1.218 -0.140 Pop Var = S.L. Tails t-critical x1 x2 s1 n1 s2 n2 stan. Err t 0.05 Right 2.015 32 30.2 4.47 7 0.65 6 1.710 1.052 Pop Var ≠ S.L. Tails t-critical x1 x2 s1 n1 s2 n2 stan. Err t 0.05 Two 2.052 93.1 97.9 5.7 13 5.2 16 2.027 -2.368 Pop Var = t-critical -2.052 S.L. Tails t-critical x1 x2 s1 n1 s2 n2 stan. Err t 0.01 Two 3.250 80 84 3.37 10 5.4 10 2.011 -1.989 Pop Var ≠ t-critical -3.250
  3. 3. Second Sample Critical First Data Data Size d d2 Sum d Sum d2 d-avg sd Sig Score 139 104 5 35 1225 63 2847 12.60 22.6561 0.01 Left 122 113 9 81 -3.747 126 100 26 676 Right 64 88 -24 576 3.747 78 61 17 289 Two 0 0 4.604 0 0 -4.604 0 0 0 0 Score 0 0 1.24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
  4. 4. Sig Level Critical Score x1 n1 x2 n2 P-bar Q-bar p1^ p2^ Z-Score 0.05 -1.645 178 378 320 516 0.56 0.44 0.47 0.62 -4.438 Left Sig Level Critical Score x1 n1 x2 n2 P-bar Q-bar p1^ p2^ Z-Score 0.05 1.645 193 1484 61 1013 0.1 0.9 0.13 0.06 5.669 Right Sig Level Critical Score x1 n1 x2 n2 P-bar Q-bar p1^ p2^ Z-Score 0.05 -1.960 246 300 165 300 0.685 0.32 0.82 0.55 7.119 Two-Tail 1.960
  5. 5. Advanced Confidence Intervals Z-Test Conf Critical Stan Left Right Level Z n1 x1 s1 n2 x2 s2 Test Error Endpoint Endpoint 0.95 1.960 42 3.2 3.3 42 4.1 3.9 -0.9 0.7883 -2.445 0.645 T-test = Variances Conf Critical Stan Left Right Level T n1 x1 s1 n2 x2 s2 Test Error Endpoint Endpoint 0.95 2.060 15 230 6.2 12 240 8.1 -10 2.7494 -15.663 -4.337 T-test ≠ Variances Conf Critical Stan Left Right Level T n1 x1 s1 n2 x2 s2 Test Error Endpoint Endpoint 0.9 1.796 15 41 2.42 12 38 1.65 3 0.7857 1.589 4.411

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