In early 2012,the United States Congress approval rating was approximately 10% (Reuters.com).In a poll of 400 Americans,what is the probability that their approval rating is between 8% and 12%?

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The Answer of In early 2012,the United States Congress approval rating was approximately 10% (Reuters.com).In a poll of 400 Americans,what is the probability that their approval rating is between 8% and 12%?

In Early 2012,the United States Congress Approval Rating Was Approximately