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Consider a Time Series with 15 Quarterly Sales Observations

Question 69

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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. Test the significance of the t<sup>2</sup> term at α =.05.State the critical T value (rejection point)and the p-value.Make your decision using a two-sided null hypothesis. Test the significance of the t2 term at α =.05.State the critical T value (rejection point)and the p-value.Make your decision using a two-sided null hypothesis.

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T = −3.80,p-value = .001,reject H0.
H0: βt2 ...

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