The International Rugby Board calculates test statistics for a Mann-Whitney U test on tall versus short rugby players and the average ranking for number of goals they score in a season.The smaller calculated test value of the two groups is 5, and the critical value or cutoff for the test is 3.What can the board conclude?
A) Tall rugby players and short rugby players differ in average goals per season.
B) Height of the players is strongly correlated with number of goals scored in a rugby game per season.
C) Short rugby players do not score goals very often.
D) There is insufficient evidence that tall and short rugby players differ in average goals per season.

Question

Quizplus · Accepted Answer

The calculated test value of 5 is greater than the critical value of 3, meaning that there is insufficient evidence to reject the null hypothesis that there is no difference in the average goals per season between tall and short rugby players. Therefore, the board cannot conclude that there is a significant difference between the two groups.

The International Rugby Board Calculates Test Statistics for a Mann-Whitney