Acar leaves rockford, illinois, at the rate of 75 mph, bound for madison, wisconsin. at the same time, a truck leaves madison at the rate of 45 mph, bound for rockford. if the cities are 72 miles apart, how long will it take for the car and the truck to meet?

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