The members of a population have been numbered 1–500. A sample of size 10 is to be taken from the population, using stratified random sampling with proportional allocation. The strata are of sizes 200, 150, and 150, where stratum #1 consists of the members of the population numbered 1–200, stratum #2 consists of the members of the population numbered 201–350, and so forth.

a. Determine the sample sizes that will be taken from the strata.

b. Apply Procedure 1.3 on page 43 to determine the sample (i.e., the numbers corresponding to the members of the population that are included in the sample).

Applying the Concepts and Skills