I am currently researching two groups on their willingness with 5 questions on a 7-point Likert-scale.
My hypotheses are:
$H_0$: There is no difference in willingness between the two groups.
$H_1$: There is a difference in willingness between the two groups.
I used a Man-Whitney test to determine if there is a significant difference for each of the questions between the groups. And only for one of the questions there was a significant difference. Does this mean I can reject my $H_0$ hypothesis, or do I need one hypothesis for each question?