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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