annie and amina put 50 coloured titles in a bag they use 25 green tiles 10 res tiles 5 yellow tiles and 10 blue tiles they pick one tile without looking annie says the probability of picking green is one over two amina says I think the chance of picking bird is 50% who is right explain you're thinking

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