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A statistical program is recommended. Electric power consumption is measured in kilowatt-hours ( kWh ). The local utility company offers an interrupt program whereby commercial customers that participate receive favorable rates but must agree to cut back consumption if the utility requests them to do so. A certain company 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 interrupted service was from noon to 8:00 p.m. Data on electric power consumption for the previous 72 hours are avaliable. (a) Is there a seasonal effect over the 24 -hour period? Yes, the time series plot indicates a seasonal effect with a possible linear trend. No, the time series plot indicates a horizontal pattern. No, the time series plot indicates a linear trend with no seasonal effect. No, the time series plot indicates a curvilinear trend with no seasonal effect. (c) Use trend adjusted for seasonal indexes to estimate the company's normal usage (in kWh ) over the period of interrupted service. (Round your answer to the nearest integer.) kWh A statistical program is recommended. Electric power consumption is measured in kilowatt-hours ( kWh ). The local utility company offers an interrupt program whereby commercial customers that participate receive favorable rates but must agree to cut back consumption if the utility requests them to do so. A certain company 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 interrupted service was from noon to 8:00 p.m. Data on electric power consumption for the previous 72 hours are avaliable. (a) Is there a seasonal effect over the 24 -hour period? Yes, the time series plot indicates a seasonal effect with a possible linear trend. No, the time series plot indicates a horizontal pattern. No, the time series plot indicates a linear trend with no seasonal effect. No, the time series plot indicates a curvilinear trend with no seasonal effect. (c) Use trend adjusted for seasonal indexes to estimate the company's normal usage (in kWh ) over the period of interrupted service. (Round your answer to the nearest integer.) kWh