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4. Four items of which 10% are known to be defective are purchased. Let X be the v.a. which denotes the number of defective items among the four purchased. Defective items will be returned by buyer for repair and repair cost is g(X) = 3X²+X+2. What is the average cost of repair? Hint: Var X = EX2 - (EX)²

4. Four items of which 10% are known to be defective are purchased. Let X be the v.a. which denotes the number of defective items among the four purchased. Defective items will be returned by buyer for repair and repair cost is g(X) = 3X²+X+2. What is the average cost of repair? Hint: Var X = EX2 - (EX)²

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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SOLVE STEP BY STEP IN DIGITAL FORMAT 4. Four items of which 10% are known to be defective are purchased. Let X be the v.a. which denotes the number of defective items among the four purchased. Defective items will be returned by buyer for repair and repair cost is g(X) = 3X²+X+2. What is the average cost of repair? Hint: Var X = EX² – (EX)²
Transcribed Image Text:SOLVE STEP BY STEP IN DIGITAL FORMAT 4. Four items of which 10% are known to be defective are purchased. Let X be the v.a. which denotes the number of defective items among the four purchased. Defective items will be returned by buyer for repair and repair cost is g(X) = 3X²+X+2. What is the average cost of repair? Hint: Var X = EX² – (EX)²
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