Question: 11.6 (a) Using the data from Problem 11.3 (20042006 only), fit a linear regression line to obtain the trend values. By how much, on average,

11.6

(a) Using the data from Problem 11.3 (2004–2006 only), fit a linear regression line to obtain the trend values. By how much, on average, does car production increase per year?

(b) Calculate the seasonal factors (multiplicative model). How do they compare to the values in Problem 11.3?

(c) Predict car production for April 2007.

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