Questions from Operations Management

Q: The time students entered the classroom of OM 390, Introductory Operations

The time students entered the classroom of OM 390, Introductory Operations Management, was recorded by the professor in the table below for five class meetings. Create and analyze a histogram of these...

Q: The quality inspectors at Windows Inc. visually inspect each sheet of

The quality inspectors at Windows Inc. visually inspect each sheet of 4 ft × 8 ft glass when it is through with the annealing process. They record all of the defects onto a form. The defe...

Q: Given the data shown below, use (=.2 and β =.

Given the data shown below, use (=.2 and β =.4 to create trend enhanced smoothing based forecasts for periods 7, 8, and 9. Assume that FIT1 = 22 and T1 = 7.83.

Q: Repeat problem 13 using (=.4 and β =.8. Which

Repeat problem 13 using (=.4 and β =.8. Which model gives a better approximation of the demand pattern for periods 1 through 6?

Q: Calculate the slope and intercept for the data in the question 1

Calculate the slope and intercept for the data in the question 1 using simple linear regression. You may want to use an Excel spreadsheet to check your answer.

Q: Wamaco Corporation uses the same simple exponential smoothing forecasting model for all

Wamaco Corporation uses the same simple exponential smoothing forecasting model for all of its products. The model has yielded the following weekly forecasts: a. What value of α is Wama...

Q: Many supply managers use a monthly reported survey result known as the

Many supply managers use a monthly reported survey result known as the purchasing managers' index (PMI) as a leading indicator to forecast future sales for their businesses. Suppose that the PMI and y...

Q: Assume that the following demands vary according a four period seasonal cycle

Assume that the following demands vary according a four period seasonal cycle. a. Compute the seasonal indexes using the average demand in each cycle as the base. b. Compute the seasonal indexes usin...

Q: Use the Excel spreadsheet that accompanies this Supplement to evaluate different forecasting

Use the Excel spreadsheet that accompanies this Supplement to evaluate different forecasting models using the ice cream sales data. a. Which model, time series regression, causal regression using temp...

Q: Given the series of demand data below / a

Given the series of demand data below a. Calculate the forecasts for periods 7 through 11 using moving average models with n=2, n=4, and n=6. b. Calculate the Bias and MAD for each set of forecasts....