Can someone me with these questions ! ?

What is the difference between regular convex and concave polygons

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 .

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take