Science:Math Exam Resources/Courses/MATH105/April 2013/Question 01 (n)
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Question 01 (n) 

ShortAnswer Questions. Put your answer in the box provided but show your work also. Each question is worth 3 marks, but not all questions are of equal difficulty. Find the expected value of the random variable whose probability density function is 
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Hint 

The expected value of a random variable with probability density function , which we denote by , is given by : 
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Solution 

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Please rate my easiness! It's quick and helps everyone guide their studies. The expected value of a random variable with probability density function , which we denote by , is given by : In this case, the expected value is given by Therefore the final answer is 