Question

if X follows N(10,1) and U=120+6X then variance of U is​

Answer 1

Answer:

Variance(U) = 36

Step-by-step explanation:

Since, X follows N(10, 1)

This means X follows Normal Distribution with Mean 10 and Variance is 1.

⇒ Variance of X = 1

Now, U = 120 + 6X

Variance of U = Var(U) = 36 × Var(X)

⇒ Var(U) = 36 × 1 = 36

Answer 2

Variance of U is 36 .

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