In a recent study on world happiness, participants were asked to evaluate their current lives on a scale from 0 to 10, where O represents the worst possible life and 10 represents the best possible life. The mean response was 5.3 with a standard deviation of 2.3. (a) What response represents the 94th percentile? (b) What response represents the 55th percentile? (c) What response represents the first quartile?

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