In 1960, 67.6% of the U.S. population (aged 14 and over) was married. A random sample of

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In 1960, 67.6% of the U.S. population (aged 14 and over) was married. A random sample of 600 Americans in 2014 indicated that 316 were married. Estimate the true proportion of married Americans with 99% confidence. Assume the variable is normally distributed.

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