Eight years of quarterly data of a seasonally adjusted series are used to estimate an exponential trend

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Eight years of quarterly data of a seasonally adjusted series are used to estimate an exponential trend model as = 2.80 + 0.03t In(T)  with a standard error of the estimate, se = 0.08. In addition, quarterly seasonal indices are calculated as Ŝi = 0.94, Ŝ2 = 1.08, Ŝ3 = 0.86, and Ŝ4 = 1.12 %3D %3D %3D

a. Interpret the third and the fourth quarterly indices.

b. Make a forecast for all four quarters of next year.

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