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Construct a c-chart for the company that describes 99.74% (3s) of the random variation in the process, and indicate if the process seems.
What was the incidence rate of leukemia during the 10-year follow-up period?What was the case fatality rate during the 10-year follow-up period?
Glen Evans is an emergency medical technician for a local rescue team and is routinely called on to render emergency care to citizens facing crisis situations.
For a given inventory item, demand averages 80 units per week, with a standard deviation of 3 units.
Computing 3-month moving average of this demand. Does this series still show seasonal variation?
If the demands forecast is Not Possible (NP) to generate for a particular month, then you must type in NP as your answer.
Compute the 3-month moving average of this demand. Does this series still show seasonal variation?
Use a 2 month weighted moving average with weights for periods Wt = 70%, Wt-1 = 30%, to make a forecast for July.
Would a stock out risk of 2 percent require more or less safety stock than a 1 percent risk? Explain.
Calculate the MAD (Mean Absolute Deviation) for March - June for your exponential smoothing forecast with a = 0.84 (same as before).
Find the optimal protection level for high fare seats (the number of seats to be protected from sale at the low fare).
Given the information below, estimate the probability that the noncritical path B-F-G will take more than 20 weeks?
Determine the order quantity and reorder point. (Use Excel’s NORMSINV( ) function to find your z-value and then round that z-value to 2 decimal places.
In a genetics experiment, one sample of offspring contained 374 green peas and 354 yellow peas.
The target cycle service level is 95%. How much reduction in holding cost per unit sold can Gap expect if moving Khaki pants from store to the online channel?
They have an average daily demand of 23 gallons per day, but it varies by about 6 gallons per day. Their lead time for receiving new milk is 2 days.
Of the four types of survey methods discussed in the text - self-administered questionnaire, interview survey, telephone survey and online survey.
The Forever Young Cosmetic Company used forecast model 2 to forecast demand for a different product. Calculate the MFE based on these 8 weeks of data.
Estimate a multiple regression model between the quantity sold (Y) and the following explanatory variables
(a) Construct a 90 percent confidence interval for the true mean weight.
For the data above, find the best single exponential smoothing model by evaluating the MSE from 0.1 to 0.9, in increments of 0.1.
The plant supervisor would like to assign jobs so that total time is minimized. Use the assignment method to find the best solution.
Based on the results of an appropriate hypothesis test, should the aircraft manufacturer buy aluminum sheets from this supplier. Explain why or why not?
Perform a chi-square goodness-of-fit test. Report and interpret the computed p-value.
Suppose in the historical data, the range of the Price data is [$15, $35], If the current price = $20, how can you use the regression model to predict.