(Choose 1 answer)
(See picture)
A. normal with mean 0 and standard deviation 1.6155
B. standard normal.
C. None of the other choices is correct
D. normal with mean 0 and standard deviation 2.61
E. normal with mean u and standard deviation 1.6155
Let X 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
1
