Given the regular polygon, select all of the rotations and reflections that carry the figure onto itself. a rotation of 72° around the center, point d

a reflection across line c, through a vertex and the midpoint of the opposite side

a reflection across line a, through two vertices

a reflection across line b, through one vertex and a midpoint of the opposite side.

a rotation of 60° around the center, point d

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels. ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0