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I have 11 questions about Elements of Probability Theory. The deadline is tomorrow, 28/09/2015, at 21:00 PM. I have finished the question 1,...

I have 11 questions about Elements of Probability Theory.  The deadline is tomorrow, 28/09/2015, at 21:00 PM. I have finished the question 1, 2,3,4,5,8 and 11. Please check my answers of these questions, if you find any errors, please help me to fix it. Question 6, 7, 9  and 10 are not finished, please help me to solve them, thanks a lot. The classnotes and pdf of textbook will be attached, thanks. After I accpted your solution,  I will give the amount of $30 as tip, thanks. 

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Solutions_Q # 6, 7, 9, and 10_Elementary Probability_John_YiXinYiYi.docx

Question 6:
(a) (b) The expectation of Y is,
1
1
1 15
E ( Y )=∑ y P ( y )=3 × +5 × +7 × = =5 .
3
3
3 3 Question 7:
(a) (b) The condition for existence of the expected value of Y is, | y| P ( y...

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