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[Related to the Apply the Concept on page 647] An article in the Wall Street Journal noted that many economists believe that GDP data for India are unreliable because “most enterprises are tiny and unregistered, and most workers are employed off the books. The government’s infrequent surveys represent only a best guess of the value being added in back-alley workshops, outdoor markets and other cash-based corners of the economy.”
What does the article mean by working “off the books”? Why might it be difficult for the government to measure the production of small, cash-based firms?
A researcher calculates statistical significance for her study and finds a 5 percent chance that results are due to chance. Which of the following is an accurate interpretation of this finding? a. This is highly statistically significance. b. This is the minimum result typically considered statistically significant. c. This is not statistically significant. d. There is no way to determine statistical significance without replication of the study. e. Chance or coincidence is unrelated to statistical significance.