The school psychologist, Dr. Green, randomly sampled 50 parents from her school to examine how the parents' Marital Satisfaction and Work-Family Conflict impacted their children's development. In addition to rating their marital satisfaction and work-family conflict, the parents also rated their children's symptoms on six developmental issues: Social Problems, Somatic Complaints, Academic Problems, Delinquent Behaviors, Aggressive Behaviors, and Symptoms of Anxiety. Then these six scales were combined to create a scale of Overall Developmental Issues.

what are the null and alternative hypothesis?