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Table 4 Hypothesis testing: two-independent-samples T test and Mann–Whitney U test

From: Are the expected benefits of requirements reuse hampered by distance? An experiment

Variable Statistic p value
Effectiveness \(U = 103.0\), \(Z = -.048\) .961
Productivity \(U = 71.0\), \(Z = -1.470\) .142
Difficulty \(T(27) = .124\) .902
Speed \(U = 93.5\), \(Z = -.474\) .635
Quality \(U = 100.5\), \(Z = -.173\) .863
Understanding \(U = 103.0\), \(Z = -.050\) .960
  1. Significance level: .05