Operations Management 8 problems (Finance problems)

National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a seven-month period were as follows:

Month Sales

(000)Units Feb. 20 Mar. 23 Apr. 7 May. 25 Jun. 18 Jul. 28 Aug. 30

b. Forecast September sales volume using each of the following:

(1) A linear trend equation.(Round your intermediate calculations and final answer to 2 decimal places.)

Yt thousands

(2) A five-month moving average. (Round your answer to 2 decimal places.)

Moving average thousands

(3) Exponential smoothing with a smoothing constant equal to .20, assuming a March forecast of 18(000). (Round your intermediate forecast values and final answer to 2 decimal places)

Forecast thousands

(4) The naive approach.

Naive approach thousands

(5) A weighted average using .60 for August, .20 for July, and .20 for June. (Round your answer to 2 decimal places.)

Weighted average thousands

Freight car loadings over an 18-week period at a busy port are as follows:

Week Number Week Number Week Number 1 220 7 350 13 460 2 245 8 360 14 475 3 280 9 400 15 500 4 275 10 380 16 510

5 300 11 420 17 525

6 310 12 450 18 541

a. Determine a linear trend line for expected freight car loadings. (Round your intermediate calculations and final answers to 2 decimal places.)

b. Use the above trend equation to predict expected loadings for Weeks 20 & 21. (Round your final answers to 2 decimal places.)

The forecasted demand for Week 20 is and for Week 21 is .

c. The manager intends to install new equipment when the volume exceeds 800 loadings per week. Assuming the current trend continues, in which week (at the earliest) should the loading volume reach that level? (Use the rounded answers, as required, from any previous part of this problem. Do not round any other intermediate calculations. Round your final answer to 2 decimal places.)

It should reach 800 loadings in Week . rev: 09_25_2014_QC_54677, 11_19_2014_QC_59433, 02_05_2015_QC_CS-1708

An analyst must decide between two different forecasting techniques for weekly sales of roller blades: a linear trend equation and the naive approach. The linear trend equation is Ft = 127 + 1.8t, and it was developed using data from periods 1 through 10. Based on data

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for periods 11 through 20 as shown in the table, which of these two methods has the greater accuracy if MAD and MSE are used? (Round your intermediate calculations and final answers to 2 decimal places.)

t Units Sold 11 147 12 149 13 151 14 142 15 154 16 151 17 154 18 155 19 161 20 163

MAD (Naive)

MAD (Linear)

MSE (Naive)

MSE (Linear)

(Click to select)  provides forecasts with less average error and less average squared

error.

Timely Transport provides local delivery service for a number of downtown and suburban businesses. Delivery charges are based on distance and weight involved for each delivery: 17 cents per pound and 12 cents per mile. Also, there is a $22 handling fee per parcel.

a. Develop an expression that summarizes delivery charges. (Enter your answers as dollar amounts to 2 decimal places (x1 = weight, x2 = distance). Omit the "$" sign in your response.)

y = $ x1 + $ x2 + $

b. Determine the delivery charge for transporting a 32-pound parcel 12 miles. (Do not round your intermediate calculation. Round your answer to 2 decimal places. Omit the "$" sign in your response.)

y = $

The manager of a fashionable restaurant open Wednesday through Saturday says that the restaurant does about 27 percent of its business on Friday night, 33 percent on Saturday night, and 23 percent on Thursday night. What seasonal relatives would describe this situation?(Round your answers to 2 decimal places.)

Wednesday

Thursday

Friday

Saturday