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How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

If the probability of an event happening is 65% then the probability this event does not occur?

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?