A random sample is to be selected from a population that has a proportion of successes p = 0.64. Determine the mean and standard deviation of the sampling distribution of p̂ for each of the following sample sizes. (Round your standard deviations to four decimal places.) a.  n = 70 mean: standard deviation:   b.   n = 120 mean: standard deviation:   c.   n = 220 mean: standard deviation:

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Q: What symbol is used for the standard deviation when it is a sample statistic? What symbol is used…

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.