As of a study conducted in France investigating the effectiveness of the drug mifepristone part (RU 486) for terminating early pregnancy, 488 women were administered mifepristone followed 48 hours later by a single dose of a second drug, misoprostol. In 473 of these women, was terminated and the conceptus completely expelled. the pregnancy (a) Estimate the proportion of successfully terminated early pregnancies among women using the described treatment regimen. (b) Construct a 95% confidence interval for the true population proportion p. (c) Interpret this confidence interval.

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