Table 15.24 gives quarterly sales (in thousands of cases) of Tiger Sports Drink over the previous eight years. Plot the data and use an appropriate forecasting technique to find point predictions of and 95 percent prediction intervals for the sales of Tiger Sports Drink in each quarter of next year.

Table 15.24

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Year Quarter 72 123 3 4 81 102 94 106 170 87 115 177 77 2 162 147 140 131 158 116 136 3 146 191 177 167 200 218 109 134 142 149 4 96 101 120 128