Use the data in books.dat for this problem. i. Plot replace vs. purchase for the raw data.
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Use the data in books.dat for this problem.
i. Plot replace vs. purchase for the raw data.
ii. Plot replace vs. purchase using the sampling weights.
iii. Using a design-based approach, estimate the regression equation for predicting replace from purchase, along with its standard error. How many df would you use in constructing a CI for the slope? Explain.
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