Lewis can run up to about 50 kilometers when he runs. his usual training
distance is 20 kilometers. if the variable d stands for the distance lewis can
run, which of the following units could apply to that variable?

a. pounds

b. kilometers

c. gallons

d. inches

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