2 Which expression is equivalent to -6[
==(-3-2012
0 -4 -12%
0 - 4 + 2%
o 4-12%
o 4+ 12%

first answer gets best marks

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?