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Potential jurors. On page 28-11 are descriptive statistics and a scatterplot for the reporting percents in 1985 and 1997 from Table 28.2.
(a) Use the descriptive statistics to compute the least-squares regression line for predicting the reporting percent from the coded reporting date in 1985.
(b) Use the descriptive statistics to compute the least-squares regression line for predicting the reporting percent from the coded reporting date in 1997.
(c) Interpret the value of the slope for each of your estimated models.
(d) Are the two estimated slopes about the same?
(e) Would you be willing to use the multiple regression model with equal slopes to predict the reporting percents in 1985 and 1997? Explain why or why not.
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