Mathematics, 20.03.2020 08:30, miargaree1823

According to data from the 2010 United States Census, 71.6% of the total United States population was over the age of 20. Suppose Maria, a researcher, takes a random sample of 70 Americans and finds that 42 are over the age of 20. Let p represent the sample proportion of Americans that were over the age of 20.

What are the mean and standard deviation of the sampling distribution of p? Provide your answer rounded to three decimal places.

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According to data from the 2010 United States Census, 71.6% of the total United States population wa...