(a) A marketing agent asked people to rank the quality of a new soap on a scale from 1 (poor) to 5 (excellent). The level of this measurement is

(i) interval (ii) nominal (iii) ordinal (iv) ratio

(b) A STAT 200 instructor surveyed nearly 100 students, who took STAT 200 in Fall 2018, and asked how many hours they spent on STAT 200 each week. The average hours spent was 12.25 hours. The value 12.25 is a:

(i) parameter (ii) statistic (iii) population (iv) sample