Science:Math Exam Resources/Courses/MATH103/April 2017/Question 09 (e)
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Question 09 (e) 

The probability density function (pdf ) for the mortality of a jellyfish (Turritopsis dohrnii), , at age is given by for . (e) Determine whether the following statement is true or false; the average lifespan of any single jellyfish is arbitrarily long. 
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Hint 

Consider part c) of this question. 
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Solution 

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Please rate my easiness! It's quick and helps everyone guide their studies. The average lifespan of a jellyfish is equal to the mean mortality of the jellyfish. By part c), this equals , so it follows that the average lifespan of a jellyfish is indeed arbitrarily long. Hence,
