Kindly help me write these questions in null hyphoteses form:

RQ1:What effect do SEL-focused after-school activities have on middle school students' sense of community?

RQ2: Do middle school students who take part in SEL-focused after-school programs and those who don't differ in how they establish their sense of community?

RQ3: Does the impact of social-emotional learning-focused after-school activities on the emergence of a feeling of community among middle school children vary depending on particular demographic factors (such as gender and socioeconomic status)?

RQ4: What methods and best practices can be found to increase the impact of after-school activities focusing on social and emotional learning on fostering a sense of community among middle school students?