Research is counted 8912 monarch butterflies on one branch of a tree at a site in mexico. the estimate of the total number of butterflies at the site was 1000 times as large. about how many butterflies were at the site in all? explain your thinking and include a statement of the solution

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