Identifying the type of experiment. Brief descriptions of a number of experiments are given next. Determine whether each is observational or designed and explain your reasoning. a. An economist obtains the unemployment rate and gross state product for a sample of states over the 10 years, with the objective of examining the relation- ship between the unemployment rate and the gross state product by census region. b. A manager in a paper production facility installs one of three incentive programs in each of nine plants to determine the effect of each program on productivity. past

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Identifying the type of experiment. Brief descriptions
of a number of experiments are given next. Determine
whether each is observational or designed and explain
your reasoning.
a. An economist obtains the unemployment rate and
gross state product for a sample of states over the past
10
with the objective of examining the relation-
years,
ship between the unemployment rate and the gross
state product by census region.
b. A manager in a paper production facility installs one
of three incentive programs in each of nine plants to
determine the effect of each program on productivity.
Transcribed Image Text:Identifying the type of experiment. Brief descriptions of a number of experiments are given next. Determine whether each is observational or designed and explain your reasoning. a. An economist obtains the unemployment rate and gross state product for a sample of states over the past 10 with the objective of examining the relation- years, ship between the unemployment rate and the gross state product by census region. b. A manager in a paper production facility installs one of three incentive programs in each of nine plants to determine the effect of each program on productivity.
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