Estimate a TSD model using the provided Si and a trend equation with per dummy variable for period 151 dummy variable 1 for period 67 to 140 dummy variable 1 from period 160 to 234 dummy variable for period 129 dummy variable a for period 141 to 160 The equation is Answers two decimal places. A A A AV A A/ A * per+ dummy 151+ * dummy 67 to 140 - * dummy 160 to 234 + dummy 129 - * dummy 141 to 160