2. We select n=2 random samples without substitution from the population 7, 10, 9, 11, 13, 12, 15 in which N=7. Find possible samples number, then draw a table which includes the information of...

Extracted text: 2. We select n=2 random samples without substitution from the population 7, 10, 9, 11, 13, 12, 15 in which N=7. Find possible samples number, then draw a table which includes the information of possible samples and sample means and sample variances for each possible sample. Finally, show that o2 N-n Ε[X]-μ and σ %3D п N-1 Hint: To Show that you must first find X, E[X], og , µ, and o, then Show that the equations above are correct. Be careful about population vs sample mean or variance etc.