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## Grossmont College 3D Systems Three Month Moving Average Forecast Report

### Question Description

I’m working on a business multi-part question and need support to help me study.

Part I. 3D Systems

3D Systems is a company producing personal protective equipment using 3D printers. The monthlysales of their first year of operations are given in data file 3DSystems.xls (values in 1,000 USD, see CC,Final Exam).

a. Construct a time series plot. What type of pattern exists in the data?

b. Develop a three-month moving average forecast for the sales of 3D Systems. Include the Excelresults in your report.

c. Develop a forecast using exponential smoothing with ?=0.2 for the sales of 3D Systems. Include theExcel results in your report.

d. Calculate mean square error (MSE) for both three-month moving average and exponential smoothingwith ?=0.2. Which one provides the better forecast based on MSE? Why?

Part II: MutuFund

MutuFund is planning to allocate \$2,000,000 funds to Title loans, Payday loans, Unsecured Personalloans, and Secured Personal loans. The annual rate of return (RoR) of each type of loan is shown intable below. The management of MutuFund has decided to allocate at least 25% of total funds to Titleloans. In addition, the total allocation to Secured and Unsecured Personal loans cannot exceed 75% oftotal funds. Furthermore, the amount allocated to Payday loans should be at least 30% of amountallocated to Title loans.

Type of loan Unsecured PersonalloansSecured PersonalloansPayday loans Title loans

Rate of Return 12% 8% 9% 11%

a. Formulate a linear optimization model to determine the optimal amount of funds that should beallocated to each type of loan to maximize the total annual return for the \$2 million funds. Write downthe decision variables, objective function, and constraints.

b. Implement the optimization model in Excel spreadsheet and use the solver to obtain the optimalsolution. How much should be allocated to each type of loan? What is the total annual return? What isthe annual percentage return? Create screenshots of your Excel model and solver dialog box and includethem in your report.

c. Suppose that the rate of return on Title loans increases to 13%. How does the amount allocated toeach type of loan, total annual return, and annual percentage return change? Create screenshots of yourExcel model and solver dialog box and include them in your report.

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