If Y=5X + 10 and X is N(10,25), then mean of Y is ?
Correct answer: D. 60
- A. 135
- B. 50
- C. 70
- D. 60
Explanation
For a linear transformation, E(Y) = 5E(X) + 10. Substituting E(X) = 10 gives E(Y) = 5(10) + 10 = 60.
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