Question is ⇒ X and Y are two random variable and Z = X + Y. Let σx2, σy2 and σz2 be variance of X, Y and Z. Then, Options are ⇒ (A) σz2 = σx2 + σy2, (B) σz2 ≤ σx2 + σy2, (C) σz2 < σx2 + σy2, (D) σz2 > σx2 + σy2, (E) , Leave your comments or Download question paper.

Question is ⇒ X and Y are two random variable and Z = X + Y. Let σx2, σy2 and σz2 be variance of X, Y and Z. Then, Options are ⇒ (A) σz2 = σx2 + σy2, (B) σz2 ≤ σx2 + σy2, (C) σz2 < σx2 + σy2, (D) σz2 > σx2 + σy2, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	X and Y are two random variable and Z = X + Y. Let σ_x², σ_y² and σ_z² be variance of X, Y and Z. Then
A.	σ_z² = σ_x² + σ_y² [Correct Answer]
B.	σ_z² ≤ σ_x² + σ_y² [Wrong Answer]
C.	σ_z² < σ_x² + σ_y² [Wrong Answer]
D.	σ_z² > σ_x² + σ_y² [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

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