Suppose that12 % of the people in a large city have used a hospital emergency room in the past year.
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Question

Suppose that 12%

 of the people in

a large city have used a hospital emergency room in the past year. If a random sample of 155

 people from the city is taken, approximate the probability that more than 16

 used an emergency room in the past year. Use the normal approximation to the binomial with a correction for continuity.

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