Hugo and viviana work in an office with nine other coworkers. out of these 11 workers, their boss needs to choose a group of four to work together on a project how many different working groups of four can the boss choose?

Aresearcher believes increased perceived control influence the well-being of residents at a nursing home. to test this , she allowed one group of residents to have control over their daily lies, (where to eat etc) . the other group of 5 residents had these deceisions made by staff. the resident's feelings of well-being were measured on a 10 point scale at the end of a one month trial period. is there a difference on well-being?