Table 4. Hypotheses for the questionnaire item How did you like App Inventor?

$H_0$	$H_1$	Probability of error	The null hypothesis
There are no statistically significant differences between the opinions of boys and girls, whether they liked the App Inventor environment.	There are differences between boys and girls on whether they liked the App Inventor environment.	89.74%	Accept
There are no statistically significant differences between the opinions of primary and secondary school students regarding whether they liked the App Inventor environment.	There are differences between the opinions of primary and secondary school students on whether they liked the App Inventor environment.	0.00%	Reject