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A Gallup Poll showed that 30% of Americans are satisfied with the way things are going...

A Gallup Poll showed that 30% of Americans are satisfied with the way things are going in the United States. Suppose a sample of 20 Americans is selected as part of a study of the state of the nation.

  1. Compute the probability that exactly 4 of the 20 Americans surveyed are satisfied with the way things are going in the United States.
  2. Computer the expected number of Americans who are satisfied with the way things are going in the United States.
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