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...


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.


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​(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





Jun 09, 2022
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