The function f(x) is to be graphed on a coordinate plane
f(x) = startlayout enlarged left-brace 1st row 1st column
negative x, 2nd column x less-than 0 2nd row 1st column
2nd column x greater-than-or-equal-to o endlayout

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?