For each of the two scenarios identify whether the rows of the example data are a statistically independent sample, or if the rows are dependent on each other. Please provide a one or two sentence explanation.

$1.$b$)$ A social$-$media application has collected the time evolution of the self$-$reported relationships between pairs of users. Each relationship is represented by a pair of records, each containing a pair of users, the type of relationship, and the time$-$span of the relationship.

Request User A: Relation $$ Daughter; Respond User $$ B; Start $$ Null; End $$ Null;

Request User B: Relation $$ Mother; Respond User $$ A; Start $$ Null; End $$ Null;

Request User A: Relation $$ Friend; Respond User $$ C; Start $$ March $5$; End $$ Null;

Request User C: Relation $$ Friend; Respond User $$ A; Start $$ March $5$; End $$ Null;

Request User D: Relation $$ Empoyee; Respond User $$ B; Start $$ May $23$; End $$ Dec $15$;

Request User B: Relation $$ Empoyee; Respond User $$ D; Start $$ May $23$; End $$ Dec $15$;