The Sacramento Bee (11 Feb. 2001, p. A20) reported on a Newsweek poll that was based on interviews with 1000 adults, asking questions about a variety of issues.
a. What is the margin of error for this poll?
b. One of the statements in the news story was “ a margin of error of plus or minus three percentage points means that the 43 percent of Americans for and the 48 percent of Americans against oil exploration in Alaska’s Arctic National Wildlife Refuge are in a statistical dead heat.” Explain what is meant by this statement.

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