If random variable X is such that E[(X-1)]=10, E[(X-2)] = 6, what is σ'

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.4: Values Of The Trigonometric Functions
Problem 21E
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If random variable X is such that E[(X-1)²] =10, E[(X-2)²] = 6, what is σ²
A) 1/2
B) 7/2
C) 3/4
D) 15/4
Transcribed Image Text:If random variable X is such that E[(X-1)²] =10, E[(X-2)²] = 6, what is σ² A) 1/2 B) 7/2 C) 3/4 D) 15/4
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