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 2.5. (a) What response has a z-score of 1.40 ? (b) What response has a z-score of 0.22 '? (c) What response has a z-score of 0.68 ? (a) The response that has a z-score of 1.40 is (Round to two decimal places as needed.) (b) The response that has a z-score of 0.22 is (Round to two decimal places as needed.) (c) The response that has a zscore of - 0.68 is (Round to two decimal places as needed.) (9 Time Remaining: 00:52:25 m