The following gives the number of accidents that occurred on Florida State Highway 101 during the last 4 months:

Month Number of Accident

January 30

February 40

March 60

April 90

Forecast the number of accidents that will occur in May, using least-squares regression to derive a trend equation.

4.25 In the past, Peter Kelle's tire dealership in Baton Rouge sold an average of 1,000 radials each year. In the past 2 years, 200 and 250,respectively, were sold in fall, 350 and 300 in winter, 150 and 165 in spring, and 300 and 285 in summer.

With a major expansion planned, Kelle projects sales next year to increase to 1,200 radials.

What will be the demand during each season?

4.26George Kyparisis owns a company that manufactures sailboats. Actual demand for George's sailboats during each of the past four seasons was as follows

Season	1	2	3	4
Winter	1,400	1,200	1,000	900
Spring	1,500	1,400	1,600	1,500
Summer	1,000	2,100	2,000	1900
Fall	600	750	650	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?

4.27Attendance at Orlando's newest Disneylike attraction, Lego World, has been as follows:

Quarter Guests (In Thousands) Quarter Guests (In Thousands) Quarter Guests(In Thousands)

Winter Year 1 73 Winter Year 2 65 Winter Year 3 89

Spring Year 1 104 Spring Year 2 82 Spring Year 3 146

Summer Year 1 168 Summer Year 2 124 Summer Year 3 205

Fall Year 1 74 Fall Year 2 52 Fall Year 3 98

Compute seasonal indices using all of the data.

Heizer, J., Render, B., & Munson, C. (2019). Operations Management: Sustainability and Supply Chain Management (13th ed.). Pearson Education (US). https://online.vitalsource.com/books/9780135202722