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1. George Kyparisis owns a company that manufactures sailboats. Actual demand fo

ID: 398656 • Letter: 1

Question

1.       George Kyparisis owns a company that manufactures sailboats. Actual demand for George’s sailboats during each of the past four seasons was as follows:

Year

Season

1

2

3

4

Winter

1,200

1,400

900

800

Spring

1,500

1,500

1,700

1,500

Summer

900

2,100

2,000

2,000

Fall

500

750

700

500

George has forecasted that annual demand for his sailboats in year 5 will equal 5,600 sailboats. Based on this data and the multiplicative seasonal model, what will the demand level be for George’s sailboats in the spring of year 5?

Year

Season

1

2

3

4

Winter

1,200

1,400

900

800

Spring

1,500

1,500

1,700

1,500

Summer

900

2,100

2,000

2,000

Fall

500

750

700

500

Explanation / Answer

(a) (b) (c) (d) (e) (f) Season 1 2 3 4 Average yearly Demand [(a)+(b)+(c)+(d) /4] Average Monthly Demand (4,988/4) Seasonal index [(e)/(f)] Winter 1,200    1,400       900      800                               1,075               1,247 0.9 Spring 1,500    1,500    1,700 1,500                               1,550               1,247 1.2 Summer      900    2,100    2,000 2,000                               1,750               1,247 1.4 Fall      500        750       700      500                                   613               1,247 0.5                               4,988 Forecasted Annual demand for year 5 =    5,600 Demand level for George's sailboats in the spring of year 5 = (Annual Demand/4) X Seasonal index = (5,600/4) X 1.2 =    1,680 Sailboats