阿摩線上測驗
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阿摩線上測驗
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1. (30%) Answer the following questions briefly:
(c) Let the variables X₁, X₂, and X₃ have the variances σ₁² = 1.0, σ₂² = 3.0, σ₃² = 5.0. Let these variables be independent and Y = 13 - 2X₁ + 3X₂ - 10X₃. Find the variance of Y.(6%)