Chaptee 4 the ε o many ermhs o5. have a.) esoctly 15 inversions b)exactly 14 inversions c.) exactly 13 inversions r b soluhons: how many permutation have exactly 15 inversions, 14,13. unerent permutations have different inversion sequences. theorem 4.2.1 let b, b n be a sequence of integers satisfying then there erists a unique permutation of 2.) whose inversion sequence is bi, b,bn proof. we describe two methnds 6 i don't understand how to get the following solutions for the inversion questions.

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