Let X1, X2, .,X, be a random sample of size n from normally distributed population with mean u variance o?. Assuming that of is a real number determined in advance, which one of the following statistics can be used to test the nul hypothesis of Ho:o² = of against Ha: o² > o3?

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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.