Abloomberg researcher is seeking a representative sample (of size n = 50) of fortune magazine's list of the 500 largest industrial corporations. she randomly decides to begin at company number 4 and then select every 10th company until 50 have been selected. the researcher is using what type of sampling plan?
a. convenience sampling
b. stratified sampling
c. judgment sampling
d. simple random sampling
e. systematic sampling

Fortress international, a large conglomerate, procures a few component parts from external suppliers and also manufactures some of the key raw materials in its own subsidiaries. aside from this, the company does not solely depend on outside distributors to reach its customers. in fact, it has its own retail stores to distribute its products. in this scenario, which of the following alternatives to vertical integration is fortress international applying? a. concentric integration b. taper integration c. horizontal integration d. conglomerate integration