Consider the hypothetical population below (this population is also used in Example 2.2). Consider the stratification below,

Question:

Consider the hypothetical population below (this population is also used in Example
2.2). Consider the stratification below, with N1 = N2 = 4. The population is:

Consider the stratified sampling design in which n1 = n2 = 2.
a. Write out all possible SRSs of size 2 from stratum 1, and find the probability of each sample. Do the same for stratum 2.
b. Using your work in (a), find the sampling distribution of á¹«str.
c. Find the mean and variance of the sampling distribution of á¹«str. How do these compare to the mean and variance in Example 2.2?

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...