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Let X denote the profit of a business ma...

Let X denote the profit of a business man. The probability of getting profit `Rs. 3000` is 0.6. The probability of getting loss `Rs 4000 ` is 0.3. The probability of getting neither profit nor loss is 0.1 . The mean and variance of X are

A

`mu =100, sigma^(2)=18200000`

B

`mu=400, sigma^(2)=12300`

C

`mu=400, sigma^(2)=4560000`

D

`mu=600, sigma ^(2)=9840000`

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The correct Answer is:
D
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  12. If X is the sum of the number when two dice are rolled , then mean var...

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