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 responses were normally​ distributed, with a mean of 5.2 and a standard deviation of 2.6. Answer parts ​(a)–​(d) below. Question content area bottom ​(a) Find the probability that a randomly selected study​ participant's response was less than 4.   The probability that a randomly selected study​ participant's response was less than 4 is enter your response here   . ​(Round to four decimal places as​ needed.)   (b)) Find the probability that a​ participant's response was between 4 and 6.       (c) Find the probability that a randomly selected study​ participant's response was more than 8.   ​ (d) Identify any unusual events

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