Find the standard deviation of the random variable with the following probabilit

Question

Find the standard deviation of the random variable with the following probability distribution: write only a number as your answer. Round to two decimal place (for example: 1.74). Your Answer An Investor is considering an investment in a start-up company. She estimates that she has probability 0.25 of exist35.115 loss probability 0 20 of a exist 19, 253 profit, probability 0.15 of a exist 49 456 profit, and probability 0.40 breaking even (a profit of exist 0). Write only a number as your answer. Round to the nearest whole number. Your Answer:

Explanation / Answer

Ans:8)

9)

Expected profit=

-0.25*35115+0.2*19253+0.15*49456+0*0.4=2490.25

xi p(xi) xip(xi) (xi-mean)2*p(xi) 0 0.04 0 1.89 2 0.16 0.32 3.81 3 0.1 0.3 1.51 8 0.48 3.84 0.60 11 0.22 2.42 3.73 Total 1.00 6.88 11.55 mean=6.88 Variance=11.55

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