Asupermarket randomly gives each shopper a free two liter bottle of cola during the saturday shopping hours. the supermarket sells six different types of cola. what could be used to perform a simulation of this situation?

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?