How do we know 45 is the "original" amount in this problem? A.45 miles was the "oldest" mileage between the two. It happened last week, which is older than this week.

B. 45 came first in the problem, so it must be the original.

Help ​plz dont awer if u dont know thanks

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