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If mean of 4,7,x,8 is 5 , then the value...

If mean of 4,7,x,8 is 5 , then the value of x is.

A

5

B

7

C

3

D

1

Text Solution

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The correct Answer is:
D
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PATHFINDER-STATISTICS AND MATHEMATICAL REASONING-QUESTION BANK
  1. If each observation of a rew data, whose variance is sigma^2 is multip...

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  2. The standard deviation of a variate x is sigma The standard deviation ...

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  3. If mean of 4,7,x,8 is 5 , then the value of x is.

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  4. The S.D of the first n natural numbers is

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

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  6. Which of the following is not a fallacy?

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  7. Which of the following is a tautology? (p being any statement)

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  8. Which of the following is true?

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  9. Which of the following is different from the others?

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  10. Which of the following is different from the others?

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  11. In each of the statements pto~q~rtoq and p is true, then

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  12. Additive identity of the Boolean algebra of logical statement is

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  13. Multiplicative identity of the Boolean algebra of logical statements i...

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  14. Let X be a non-empty set, then P(X)={A:AsubX} is a Boolean lattice w.r...

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  15. Which of the following is true?

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  16. Consider the 2-place Boolean function f :{0,1} rarr{0,1} defined by ...

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  17. If x,y are any two elements of a Boolean lattice, then (x'+y')' is equ...

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  18. The mean of the data set comprising of 16 observations is 16 . If one ...

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  19. The variance of first 20 natural numbers is

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  20. The negation of ~svee(~rwedges) is equivalent to

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