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If 3u + 4v =10 nd Su = 1.2. then Var (v)...

If 3u + 4v =10 nd `S_u = 1.2`. then Var (v) = 0.81

A

0.81

B

0.8

C

0.89

D

None of these.

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UNITED BOOK HOUSE-Model Test Set -3-Exercise
  1. The algebric sum of diviation of a set of n values from their arithmet...

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  2. The arithmetic mean of the numbers 1, 2, 3, ...., n is

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  3. If 3u + 4v =10 nd Su = 1.2. then Var (v) = 0.81

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  4. If b2 = 3.16, then the distribution is

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  5. The value of /\(/\(8x+9) is

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  6. The least Fermat’s number is

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  7. a-=b (mod n) and b-=c (mod n) implies a -= c (mod n)

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  8. An unbiased die thrown two independent times Given that the first thro...

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  9. Events S and T are independent with P(S)< P(T),P(S cap T) = 6/25 and...

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  10. The data on religions of perosns of a city are .

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  11. The A.M. of variable x is 100. Then what will be the value of the A.M,...

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  12. If a varible is, then the mean and median must be equal.

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  13. If the standard deviation of 1,2,3,4,5,6 and 7 is 2, then that of 101,...

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  14. If the relation between two variables x and y is 2x + 3y = 7 and media...

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  15. If events A and B are complementary to each other, then P(B) =?

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  16. If P(A) = 1/3 , P(B) = 1/2, P(AIB) = 1/6. find P(BIA).

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  17. Write the sample space when one die is thrown twice.

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  18. Let A, B, C be three arbitrary events. Find the expressions for the fo...

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  19. Let A, B, C be three arbitrary events. Find the expressions for the fo...

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  20. Write down the Laspeyre's price index formula.

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