2-31 What are the expected value and variance of the following probability distribution? RANDOM VARIABLE X PROBABILITY 0.05 0.05 3. 0.10 0.10 0.15 0.15 0.25 8. 0.15

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if it can be done in MS-excel spreadsheet but if not it's okay 

2-31 What are the expected value and variance of the
following probability distribution?
RANDOM VARIABLE X
PROBABILITY
1.
0.05
0.05
0.10
4
0.10
0.15
6.
0.15
7
0.25
8.
0.15
Transcribed Image Text:2-31 What are the expected value and variance of the following probability distribution? RANDOM VARIABLE X PROBABILITY 1. 0.05 0.05 0.10 4 0.10 0.15 6. 0.15 7 0.25 8. 0.15
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