Question: A researcher for Procter & Gamble randomly selects five U.S. states, then surveys the store manager at each grocery store within these states to evaluate
A researcher for Procter & Gamble randomly selects five U.S. states, then surveys the store manager at each grocery store within these states to evaluate proposed trade promotions for the launch of a new shampoo. Which sampling procedure is being used?
A) Systematic
B) Simple random
C) Quota
D) Stratified
E) Cluster
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