Find the mean and variance of Z.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 35E
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![3. Let X₁, X2,..., Xn be iid random variables with mean and variance o2. Define the
random variable
X-L
Z
o/√√n
where X = (X₁ + X2 + ... + Xn). Find the mean and variance of Z.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F07a4f4aa-1fc9-4f1a-8eb5-d2bb32b9649e%2F8600abfe-9976-42c1-a657-10cdfa481f3f%2Fpsls45e_processed.png&w=3840&q=75)
Transcribed Image Text:3. Let X₁, X2,..., Xn be iid random variables with mean and variance o2. Define the
random variable
X-L
Z
o/√√n
where X = (X₁ + X2 + ... + Xn). Find the mean and variance of Z.
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