Please help! I have an answer but idk if it's right so please check and tell me if I made any mistakes! Thank you!

Which statement best explains why ben uses the width hi to create the arc at j from point k

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

Use the distance formula to find the distance between (-3,5) and (3,1)