Table 8. Hypotheses for the questionnaire item how would you rate your team and collaboration?

$H_0$	$H_1$	Probability of error	Value of the test criterion u	The null hypothesis
There are no significant differences in boys’ and girls’ responses on how they rate their team and cooperation.	There are significant differences in the responses of boys and girls on how they rate their team and cooperation.	1.96	1.340	Accept
There are no significant differences in the responses of primary and secondary school students to how they rate their teamwork and cooperation.	There are significant differences in the responses of primary and secondary school students on how they rate their teamwork and cooperation.	1.96	0.350	Accept