For each of the following, calculate the z-statistic. (Round your answers to two decimal places.) (a)sample size n = 30; sample proportion p̂ = 0.55 H0: p = 0.50 Ha: p ≠ 0.50 z =_______ (b) sample size n = 50; sample proportion p̂ = 0.22. H0: p = 0.25 Ha: p < 0.25 z =________

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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.