715 / 721
Results 2
Research Hypothesis:
Exam mark is better when the intervention is
given
Mann Whitney procedure yields:
■ Sample median = 60.0
■ Population median = 47.1
■ Sample mean = 58.7
■ Population mean = 48.8
■ U = 7731.5
■ ns = 21
■ np = 568
■ p = 0.01
■ Effect size = 0.44 (small: 0.2, medium: 0.5, large: 0.8)
Research hypothesis is supported.