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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

100, 182000000

B

4,00, 4560000

C

400, 12300

D

600, 984 0000

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The correct Answer is:
D
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AAKASH SERIES-RANDOM VARIABLE -EXERCISE - II
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  2. A player tosses two coins. He wins Rs. 1 if 1 head appears, Rs 2 if 2...

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  6. A : If the difference between the mean and variance of a binomial dist...

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  8. If a binomial distribution has mean 2.4 and variance is 1.44, then n=

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  9. If the mean of a binomial distribution with 9 trials is 6, then its va...

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  10. If the mean of the binomial distribution is 100. Then standard deviati...

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  11. Four bad apples are mixed accidentally with 20 good apples. Probabilit...

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  12. Two cards are drawn successively with replacement . The mean of number...

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  13. The mean and variance of a random variable X having binomial distribut...

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  14. The least number of times a fair coin must be tossed so that the proba...

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  15. The probabilty of hitting a target is 1/3. The least number of times t...

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  16. The mean and variance of a random variable X having a binomial distrib...

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  17. In a binomial distribution, mean = 25, variance = 20 then P(X le 100)=

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  18. If the mean and variance of a binomial variable X are 2 and 1 respecti...

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  19. X is a binomial variate with parameters n=6 and p. If 4P(X=4)=P(X=2), ...

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  20. For a binomial variate X if n=5, and P(X=1)=8P(X=3), thenp=

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