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Consider a Time Series with 15 Quarterly Sales Observations

Question 87

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Consider a time series with 15 quarterly sales observations.Using the quadratic trend model the following partial computer output was obtained. Consider a time series with 15 quarterly sales observations.Using the quadratic trend model the following partial computer output was obtained. What is the predicted value of y when t = 20? What is the predicted value of y when t = 20?

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