QUESTION 2:i)At an estimation meeting, the effort estimates for task x was recorded from all presentas follows.ResourceEstimate (day)1.Boris JohnsonFumio Kishida42.43.Ismail Sabri Yaakob4.Joe Biden4Lee Hsien LoongMia Mottley7.5.46.3.5Narendra Modi48.Pedro Sánchez7.59.Scott Morrison410.Vladimir Putin3.511. Xi Jinping3.5Assume that it is not known at this time who will be assigned to work on this task,calculate the effort needed for this task.ii) Interpret the difference between the standard deviation for a triangular versus a PERTestimate and provide your justification for your answer.

Here, I could determine the estimated effort needed for the task using PERT distribution and…

Answered: Assume that it is not known at this…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Period (t) Enrollment (1000s) 1 6.5 2 8.1 3 8.4 4 10.2 5 12.5 6 13.3 7 13.7 8 17.2 9 18.1 Develop a linear regression with a dependent variable of “Enrollment (1000s). A.What is the value of R square? (Make sure two decimal places.) B.What is the value of intercept? (Make sure two decimal places.) C.What is the coefficient value of Period (t)? (Make sure two decimal places.) D.Is the coefficient of Period (t) significant? (Yes:1, No: 0) E.What is the forecast for year 10?
Ten weeks of data on the Commodity Futures Index are 7.36, 7.41, 7.56, 7.57, 7.61, 7.53, 7.53, 7.71, 7.63, and 7.56. (a) Construct a time series plot. 1 2 3 4 What type of pattern exists in the data? Week 5 The data appear to follow a horizontal pattern. O The data appear to follow a cyclical pattern. O The data appear to follow a trend pattern. O The data appear to follow a seasonal pattern. 6 8.5- 8.3 8.1 7.9+ 7 7.7 7.5- 8 7.3 7.1 6.9 6.7 6.5 + 01 23 4567 7 8 9 10 11 Week 9 8.5- 8.3- 10 8.1 7.9 7.7+ 7.5- 7.3 7.1 6.9 6.7 6.5 0 1 2 Time Series Value 7.36 7.41 7.56 (b) Use trial and error to find a value of the exponential smoothing coefficient a that results in a relatively small MSE. (Round your answers to two decimal places.) 7.57 7.61 7.53 3 4 7.53 7.71 5 67 7 8 9 10 11 Week 7.63 7.56 a = 0.1 Forecast α = 0.3 Forecast J C O Index DIC a = 0.8 Forecast 8.5 8.3- 8.1 7.9 7.7 7.5- 7.3 7.1 6.9 6.7 6.5 0 8.5 T 8.3- 8.1 7.9- 7.7- 7.5 7.3 7.1 6.9- 6.7- 6.5 1 2 3 4 5 678 Week + 0 1 2 3 4 8 9…
Part C
Week 1 2 4 Forecast Method 1 0.90 1.05 0.97 1.22 Actual Demand 0.72 1.05 1.00 0.97 Week 1 2 3 4 Forecast Method 2 0.82 1.19 0.90 1.17 Actual Demand 0.72 1.05 1.00 0.97 0 The MAD for Method 1 = thousand gallons (round your response to three decimal places). The mean squared error (MSE) for Method 1 = thousand gallons (round your response to three decimal places). The MAD for Method 2 = thousand gallons (round your response to three decimal places). The mean squared error (MSE) for Method 2 = thousand gallons (round your response to three decimal places).
Below is data of lobster sales volume from a seafood company. We are using exponential smoothing (α = 0.5) and 3-year moving average to forecast it. a. Please fill the blanks above and write your processes below. b. What are the mean absolute deviations (MADs) of the two methods? Whichmethod will you choose based on the results? *Please solve for a-b and type or write all your work/steps and answers on paper* NO EXCEL, thank you
Answer number 2 only. Full solution. Unique answers only.
Time period Actual sales 1 18 2 22 If the forecasting value of period 3 is 19.6 using exponential smoothing, the smoothing constant is what?
Problem 3
Tom Glass forecasts electrical demand for the FlatlandsPublic Power District (FPPD). The FPPD wants to take itsComstock power plant out of service for maintenance whendemand is expected to be low. After shutdown, performingmaintenance and getting the plant back on line takes two weeks. The utility has enough other generating capacity tosatisfy 1,550 megawatts (MW) of demand while Comstockis out of service. Table 8.5 shows weekly peak demands(in MW) for the past several autumns. When next in year 6should the Comstock plant be scheduled for maintenance?
Answer number 1 only. Full solution. Unique answers only.

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Assume that it is not known at this time who will be assigned to work on this task, calculate the effort needed for this task. ii) Interpret the difference between the standard deviation for a triangular versus a PERT estimate and provide your justification for your answer.