Suppose that20%of the people in a large city have used a hospital emergency room in the past year. If a random sample of125people from the city is taken, approximate the probability that fewer than22used an emergency room in the past year. Use the normal approximation to the binomial with a correction for continuity.

Round your answer to at least three decimal places. Do not round any intermediate steps.

Please show what formula you used to answer the question. Thank you!