Mathematics · Probability and Statistics
If Y = 20 + 10X, where X is a random variable, then the variance Var(Y) is equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 120 + 10 × Var(X)
- 2400 + 100 × Var(X)
- 310 × Var(X)
- 4100 × Var(X)✓
Correct answer
100 × Var(X)
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