A brokerage survey reports that 36% of all individual investors have used a discount broker...
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A brokerage survey reports that 36% of all individual investors have used a discount broker (one that does not charge the full commission). If a random sample of 150 individual investors is taken, approximate the probability that at least 56 have used a discount broker. 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. (If necessary, consult a list of formulas.) 0.688 ?
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