in a recently 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 5.8 with a standard deviation of 2.5
(a) What response represents the 86th percentile?
(b) What response represents the 58th percentile?
(c) What response represents the first quartile?