A recipe for cookies calls for 1/3 of a cup of sugar per batch. Elena used 7 and 2/3 cups of sugar to make multiple batches of cookies. How many batches did she make?

Tell whether the two rates form a proportion

Why is causation so much more difficult to prove than correlation?

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?