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1. What is the aim of hypothesis testing? What does hypothesis testing achieve that could not be otherwise achieved? 2. What is the distinction between

1. What is the aim of hypothesis testing? What does hypothesis testing achieve that could not be otherwise achieved?

2. What is the distinction between the z and t statistics? Identify the particular quantity that distinguishes these two statistics. Is there a particular class of research questions that lend themselves to testing via the zstatistic? If so, what are the characteristics of these questions and data?

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