Sonya and isaac are in motorboats located at the center of a lake. at time t=0, sonya begins traveling south at a speed of 36 mph. at the same time, isaac takes off, heading east at a speed of 27mph. how fast is the distance between them changing after 12 minutes?

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