Proportion of investment banking firms

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You are interested in estimating p, the proportion of investment banking firms who have had at least one of their investment bankers arrested or indicted for illegal insider trading during the past year. In a sample of 50 investment banking firms, EBI found that 18 of the firms sampled had at least one investment banker arrested or indicted during the past year. Find a 98% confidence interval for p.

Reference no: EM131271120

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