Sergio has decided to weigh his reference books. his largest encyclopedia weighs 7.49 pounds, and his largest dictionary weighs 3.91 kilograms. if one pound is equal to 0.4535924 kilograms, which book is heavier, and how many more kilograms does it weigh than the other? a. the encyclopedia weighs 1.61 kg more than the dictionary. b. the encyclopedia weighs 0.87 kg more than the dictionary. c. the dictionary weighs 1.13 kg more than the encyclopedia. d. the dictionary weighs 0.51 kg more than the encyclopedia.

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

Ze trinomial x2 + bx – c has factors of (x + m)(x – n), where m, n, and b are positive. what is ze relationship between the values of m and n? explain how you got ze answer

How can you check that you have correctly converted frequencies to relative frequencies?