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If x and y are random variables having expected values as 4.5 and 2.5 respectively, then the expected value of (x–y) is
  • a)
    2
  • b)
    7
  • c)
    6
  • d)
    0
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
If x and y are random variables having expected values as 4.5 and 2.5 ...
If 4.5 and 2.5 are the expected values of x and y, then just substitute these values in the question x- y . if we subtract 4.5 - 2.5 the answer is 2 option a.
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Community Answer
If x and y are random variables having expected values as 4.5 and 2.5 ...
Solution:

The expected value of (xy) is given by the formula:

E(xy) = E(x)E(y)

Given, E(x) = 4.5 and E(y) = 2.5

Substituting the values in the formula, we get:

E(xy) = 4.5 * 2.5

= 11.25

Therefore, the expected value of (xy) is 11.25.

Option 'A' is the correct answer.
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If x and y are random variables having expected values as 4.5 and 2.5 respectively, then the expected value of (xy) isa)2b)7c)6d)0Correct answer is option 'A'. Can you explain this answer?
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