Score: 0 of 20 pts 130f 3 (0 complete) Hw Score: 0%, 0 of 50 pt > Problem 4.28 E

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Score: 0 of 20 pts 130f 3 (0 complete) Hw Score: 0%, 0 of 50 pt > Problem 4.28 E Question Help North Dakota Electric Company estimates its demand trend line (in millions of kilowatt hours) to be D 80.0 + 0.45Q. where Q refers to the sequential quarter number and Q 1 for winter of Year 1 . In addition, the multiplicative seasonal factors are as follows: Quarter Winter Spring Summer Fall Factor (Index) 0.80 1.20 1.45 0.55 In year 26 (quarters 101-104), the energy use for each of the quarters beginning with winter is (round your response to one decimal place) Quarter Energy Use Winter

Explanation / Answer

The multiplicative seasonal method adjusts a given forecast by multiplying the forecast by a seasonal factor.

Forecast for energy use in year 26 ( quarters 101-104 ) D = 80.0 + 0.45 * 101

Energy forecast = 125.45

Multiplying by the seasonal factor we get energy forecast = 125.45 * 0.80

Winter energy use = 100.4

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