Quick and simple homework_411_part_1 Problem 3-2 National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a seven-month period were as follows: Month Sales (000)Units Feb. 17 Mar. 17 Apr. 11 May. 25 Jun. 16 Jul. 25 Aug. 22 ________________________________________ 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 .30, assuming a March forecast of 16(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 .50 for August, .20 for July, and .30 for June. (Round your answer to 2 decimal places.) Weighted average thousands Problem 3-7 Freight car loadings over an 18-week period at a busy port are as follows: Week Number Week Number Week Number 1 310 7 405 13 480 2 330 8 425 14 495 3 350 9 445 15 535 4 330 10 425 16 555 5 350 11 445 17 575 6 365 12 465 18 595 ________________________________________ a. Determine a linear trend line for expected freight car loadings. (Round your intermediate calculations and final answers to 2 decimal places.) = + t 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 890 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 890 loadings in Week . â€ƒ Problem 3-20 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 + 2.1t, and it was developed using data from periods 1 through 10. Based on data 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 11 145 12 150 13 148 14 143 15 154 16 149 17 152 18 156 19 158 20 164 ________________________________________ MAD (Naive) MAD (Linear) MSE (Naive) MSE (Linear) ________________________________________ provides forecasts with less average error and less average squared error. Problem 3-24 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: 20 cents per pound and 20 cents per mile. Also, there is a $10 handling fee per parcel. a. Develop an expression that summarizes delivery charges. (Enter your answers as dollar amounts to 2 decimal places (x1 = weight, x2 = distance). Omit the “$” sign in your response.) y = $ x1 + $ x2 + $ b. Determine the delivery charge for transporting a 40-pound parcel 30 miles. (Do not round your intermediate calculation. Round your answer to 2 decimal places. Omit the “$” sign in your response.) Problem 4S-5 The guidance system of a ship is controlled by a computer that has three major modules. In order for the computer to function properly, all three modules must function. Two of the modules have reliabilities of .90, and the other has a reliability of .94. a. What is the reliabili
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