(a) If specifications for a research project require the standard error of the corresponding x distribution to be 9, how large does the sample size need to be? Recall that the standard deviation (also known as the standard error) of the x distribution is where a is the standard deviation of the x distribution. Find the sample size n for the research project given that a 9 and a 72. 72 Vn -

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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.