Electric power consumption is measured in kilowatt-hours (kWh). The local utility company offers an interrupt program whereby commercial customers that participate reoeive favorable rates but must agree to cut back consumption if the utility requests them to do so. A certain oon'ipany cuts back consumption at 12:00 noon Thursday. To assess the savings, the utility must estimate the company's usage without the interrupt. The period of intermpted service was from noon to 8:00 p.m. Data on electric power consumption for the previous 72 hours are available. Time Period Monday Tuaday Wednesday Thursday 124 a.rn. 19,291 31,219 27,340 40 a.m. 33,195 37,014 32,715 812 noon 99,516 119,978 152,475 124 p.m. 124,299 123,666 156,033 478 p.m. 113,545 111,727 128,889 8712 midnight 41,310 48,122 73,933 (a) Is there a seasonal effect over the 24ahour period? O No, the time series plot indicates a horizontal pattern. @ Yes, the time series plot indicates a seasonal effect with a possible linear trend. 0 No, the time series plot indicates a curvilinear trend with no seasonal effect. 0 No, the time series plot indicates a linear trend with no seasonal effect. J (b) Compute seasonal indexes for the six 4rhour periods. (Round your answers to four decimal places.) Adjusted Time Period Se nal Seasonal Index Index 124m. S E Ham. E E Biilnoon E E Hm S E 8712midnight E E (c) Use trend adjusted for seasonal indexes to estimate the mmpany's normal usage (in kWh) over the period of interrupted service. (Round your answer to the nearest integer) :I kWh