Triangle DEF is a right triangle with point F at the origin. Segment DE has endpoints located at D(0, −6) and E(5, 0). What is the area of triangle DEF? (1 point) 8 square units

11 square units

15 square units

30 square units

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .