Arc qvt measures 156°. circle p is shown. point v on the circle between points q and t. angles r and s intersect arc q t. angles q and t intercept arc r s. which statement must be true? angles qrt and qst both measure 78°. angles qrt and qst both measure 156°. angle qrt measures 78° and angle qst measures 102°. angle qrt measures 156° and angle qst measures 24°.

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?