1pt The tape diagram below represents the 20% of Central Middle School's sixth-grade students who walk to school.
40
10%
If we know that 40 sixth-graders at Central Middle walk to school, then the total number of sixth-grade students at Central Middle is

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