Kizspy | Question: 98
(Choose 1 answer)
(See picture)
A. normal with mean 0 and standard deviation 2.61
B. normal with mean 0 and standard deviation 1.6155
C. normal with mean μ and standard deviation 1.6155
D. standard normal.
E. None of the other choices is correct
Let denote the sample mean of a random
sample of size n₁ = 16 taken from a normal dis-
tribution N(μ, 36), and let Y denote the sample
mean of a random sample of size n₂ = 25 taken
from a different normal distribution N(μ, 9).
The distribution of X - Y is
