Question: The probability distribution for the rate of return on an investment is

1. What is the probability that the rate of return will be at least 10%?
2. What is the expected rate of return?

   Rate of Return (In Percent)	Probability	X* p
   9.5	0.1	0.95
   9.8	0.2	1.96
   10	0.3	3
   10.2	0.3	3.06
   10.6	0.1	1.06
   	Sum =	10.03

   
   Then, the expected rate of return is 10.33%
3. What is the variance of the rate of return?

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