6) Identify the sampling method used for each case as either simple random sampl

Question

6) Identify the sampling method used for each case as either simple random sampling, stratified sampling, chuster sampling, systematic sampling, or convenient sampling. (5 points) a. In order to determine whether an advertising campaign has been effective, a marketing firm conducts a nationwide poll by randomly selecting individuals from a list of known users of its product. (1 point) b. A school official divides a population of students into four different classes: freshman, sophomore, junior, and senior. Then he randomly selects a number of students from each group, and ask each of them to answer a survey question regarding student service. (1 point) c. To obtain customer opinion regarding its boarding policy, Alaska Airlines randomly selects 120 flights during a given month and surveys all passengers on the flights. (1 points) d. Every 12th customer of a grocury store was required satisfiaction of the products sold to them. (1 point) to answer a survey question regarding customer e. Internet users are required to answer a survey question regarding a political candidate whenever they go to a particular website. (1 point)

Explanation / Answer

a. Simple Random Sampling

b. Stratified Sampling

c.Cluster sampling

d.Systematic sampling

e. Convinience sampling

c.

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