In a recent study on world happiness, participants were asked to evaluate their current lives on a scale from 0 to 10, where 0 represents the worst possible life and 10 represents the best possible life. The mean response was 5.4 with a standard deviation of 2.2. 

(a) What response represents the 88th percentile?

(b) What response represents the 61st percentile?

(c) What response represents the first quartile?

Answer the questions about the specified normal distribution.