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A researcher interested in Springfield citizens' shopping habits surveys a randomly selected group of 200...

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A researcher interested in Springfield citizens' shopping habits surveys a randomly selected group of 200 Walmart shoppers. 76% of those surveyed indicated that price was more important to them than where an item was produced. The researcher concluded that "about three quarters of the people in Springfield are more concerned with cost than where an item is made."This conclusion might be invalid because:there was no control group.the size of the sample is too small.the sample is not representative of the population.76% is not exactly three quarters.None of the above

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