(a)         Five (5) female and seven (7) male teachers applied for 4 vacancies in a Junior High School. The teachers are equally qualified. Find the number of ways of employing 4 teachers if

(i) There is no restriction;

(ii) at least 2 of them are females.(b)        The table shows the positions awarded to 7 contestants by Judges X and Y in a competition.

Contestant	P	Q	*R	5	T	U	V
Judge X	2	7	1	3	6	5	4
Judge Y	4	6	2	3	7	1	5

            (i)      Calculate, correct to one decimal place, the Spearman's rank correlation coefficient.
            (ii)     Interpret your answer in (b){i) above.