Questions
1. The dean of a school of business is forecasting total student enrollment for this year...
| YEAR | TOTAL ENROLLMENT |
|---|---|
| y | |
| 2015 | 2,000 |
| 2016 | 2,200 |
| 2017 | 2,800 |
| 2018 | 3,000 |
In: Other
The compound shaft shown in the figure consists of two steel [ G = 80 GPa ] pipe segments. The shaft is subjected to external torques T B and T C which act in the directions shown. Segment (1) has an...
The compound shaft shown in the figure consists of two steel [ G = 80 GPa ] pipe segments. The shaft is subjected to external torques T B and T C which act in the directions shown. Segment (1) has an outside diameter of 196 mm and a wall thickness of 8 mm. Segment (2) has an outside diameter of 134 mm and a wall thickness of 13 mm. The torque is known to have a magnitude of T C = 26 kN ⋅ m . The shear strain in segment (1) is measured as 495 μrad . Determine the magnitude of external torque TB .
In: Other
Sroute Manufacturing intends to increase capacity by overcoming a bottleneck operation by adding new equipment Two...
Sroute Manufacturing intends to increase capacity by overcoming a bottleneck operation by adding new equipment. Two vendors have presented proposals. The fixed costs are $60,000 for proposal A and $70,000 for proposal B. The variable cost is $13.00 for A and $11.00 for B. The revenue generated by each unit is $2200.
a) The break-even point in units for the proposal by Vendor A units (round your response to the nearest whole number)
b) The break-even point in units for the proposal by Vendor B = units (round your response to the nearest whole number).
In: Other
Consider the following bonds: Bond Coupon Rate (annual payments) Maturity (years) A 0% 13 B 0% 8 C 4% 13 D 12% 8 a. What is the percentage change in the price of each bond if its yield to ma
Consider the following bonds:
Bond | Coupon Rate (annual payments) | Maturity (years) |
A | 0% | |
B | 0% | |
C | % | |
D | % |
a. What is the percentage change in the price of each bond if its yield to maturity falls from % to %?
b. Which of the bonds AD is most sensitive to a 1% drop in interest rates from % to % and why? Which bond is least sensitive? Provide an intuitive explanation for your answer.
Note: Assume annual compounding.
In: Other
A simple pin-connected truss is loaded and supported as shown in the figure.
A simple pin-connected truss is loaded and supported as shown in the figure. The load P is 200 kN. All members of the truss are aluminum pipes that have an outside diameter of 115 mm and a wall thickness of 6 mm. Determine the normal stress in each truss member. Assume truss dimensions of a = 12.0 m, b = 7.5 m, and c = 6.0 m.
In: Other
C++ Write a program that reads in two Integers. A starting number and a number of iterations. For each iteration, you generate a new number that is the result of reading off the number of same digits in the original number. output each Iteration
C++
In: Other
Patients are arriving at a clinic at a rate of two per minute. Each patient’s visit...
Patients are arriving at a clinic at a rate of two per minute. Each patient’s visit consists of four steps: check in, record vital signs, receive treatment, and check out. A receptionist takes 1 minute to check a patient in. A nurse takes 2 minutes to record the patient’s vital signs. A doctor spends 10 minutes with a patient. A staff member takes 3 minutes to check a patient out. What is the cycle time of the process in minutes?
In: Other
Develop a three-week moving average for this time series. Compute MSE and a forecast for week...
Develop a three-week moving average for this time series. Compute MSE and a forecast for week 7. Round your answers to two decimal places.
Week |
Time Series Value |
Forecast |
|---|---|---|
| 1 | 18 | |
| 2 | 13 | |
| 3 | 16 | |
| 4 | 11 | |
| 5 | 17 | |
| 6 | 14 |
MSE :
The forecast for week 7 :
Use = 0.2 to compute the exponential smoothing values for the time series. Compute MSE and a forecast for week 7. Round your answers to two decimal places.
Week |
Time Series Value |
Forecast |
|---|---|---|
| 1 | 18 | |
| 2 | 13 | |
| 3 | 16 | |
| 4 | 11 | |
| 5 | 17 | |
| 6 | 14 |
MSE :
The forecast for week 7 :
Compare the three-week moving average forecast with the exponential smoothing forecast using = 0.2. Which appears to provide the better forecast based on MSE?
Explain.
The input in the box below will not be graded, but may be reviewed and considered by your instructor.
Use trial and error to find a value of the exponential smoothing coefficient that results in a smaller MSE than what you calculated for = 0.2. Find a value of for the smallest MSE. Round your answer to three decimal places.
=
In: Other
Develop a lot-for-lot solution and calculate total relevant costs for the gross requirements in the following table*.
Develop a lot-for-lot solution and calculate total relevant costs for the gross requirements in the following table*.
Period | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
Gross requirements | 20 | 40 | 30 | 70 | 20 | 20 | 80 | 60 |
*Holding cost equals=$2.50/unit/week;
setup cost equals=$150;
lead time equals=1 week;
beginning inventory equals=40.
Develop a lot-for-lot solution (enter your responses as whole numbers).
In: Other
The H.A.L. Computer Store sells a printer for $200.
The H.A.L. Computer Store sells a printer for $200. Demand for this is constant during the year, and annual demand is forecasted to be 600 units. The holding cost is $20 per unit per year, while the cost of ordering is $60 per order. Currently, the company is ordering 12 times per year (50 units each time). There are 250 working days per year and the lead-time is 10 days.
(a) Given the current policy of ordering 50 units at a time, what is the total of the annual ordering cost and the annual holding cost?
(b) If the company used the absolute best inventory policy, what would the total of the ordering and holding cost be?
(c) What is the reorder point?
In: Other
As you can see in the following table, demand for heart transplant surgery at Washington General Hospital has increased steadily in the past few years
As you can see in the following table, demand for heart transplant surgery at Washington General Hospital has increased steadily in the past few years:
| Year | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|
| Heart Transplants | 48.0 | 52.0 | 53.0 | 57.0 | 57.0 |
The director of medical services predicted 6 years ago that demand in year 1 would be 44.0 surgeries.
a) Using exponential smoothing with a of 0.60 and the given forecast for year 1, the forecasts for years 2 through 6 are (round your responses to one decimal place):
| Year | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| Forecast | 44.0 | 46.4 | 49.8 | 51.7 | 54.9 | 56.2 |
For the forecast made using exponential smoothing with a = 0.60 and the given forecast for year 1, MAD = 4.1 surgeries (round your response to one decimal place).
Using exponential smoothing with a of 0.90 and the given forecast for year 1, the forecasts for years 2 through 6 are (round your responses to one decimal place):
| Year | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| Forecast | 44.0 | 47.6 | 51.6 | 52.9 | 56.6 | 57.0 |
For the forecast made using exponential smoothing with a = 0.90 and the given forecast for year 1, MAD = 2.9 surgeries (round your response to one decimal place).
b) Forecasts for years 4 through 6 using a 3-year moving average are (round your responses to one decimal place):
| Year | 4 | 5 | 6 |
|---|---|---|---|
| Forecast | 51.0 | 54.0 | 55.7 |
For forecasts made using a 3-year moving average, MAD = 4.5 surgeries (round your response to one decimal place).
c) Forecasts for years 1 through 6 using the trend-projection method are (round your responses to one decimal place):
| Year | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| Forecast |
In: Other
Even though independent gasoline stations have been having a difficult time, lan Langella has been thinking...
Even though independent gasoline stations have been having a difficult time, lan Langella has been thinking about starting his own independent gasoline station. Ian's problem is to decide how large his station should be. The annual returns will depend on both the size of his station and a number of marketing factors related to the oil industry and demand for gasoline. After a careful analysis, lan developed the following table:
States of Nature
| Size of First Station | Good Market | Fair Market | Poor Market |
|---|---|---|---|
| Small | $60,000 | $21,000 | -$12,000 |
| Medium | $70,000 | $32,000 | -$18,000 |
| Large | $95,000 | $32,500 | -$42,000 |
| Very Large | $280,000 | $24,000 | -$150,000 |
For example, if lan constructs a small station and the market is good, he will realize a profit of $60,000.
This exercise contains only parts b, c, and d.
b) Using the decision making under uncertainty with the criterion of Maximax
The appropriate decision will be _______
In: Other
1. The process of identifying other organizations that are best at some facet of your operations, and then modeling your organization after them is known as: A) continuous improvement B) competitive b...
1. The process of identifying other organizations that are best at some facet of your operations, and then modeling your organization after them is known as:
A) continuous improvement
B) competitive benchmarking
C) employee empowerment
D) copycatting
E) industrial espionage
True or False
____6. Six Sigma is a recognized quality program based strictly on statistical process control.
____7. Service quality is more directly related to the interaction between customer and employee
than is manufacturing quality.
____8. At economic order quantity, holding cost is always equal to ordering cost.
In: Other
The beam is constructed from three boards. (Figure 1) The allowable shear stress for the wood is τallow=335 psi. Each nail can resist a shear force of 395 lb. Part A Determine the maximum loads P tha...
The beam is constructed from three boards. (Figure 1) The allowable shear stress for the wood is τallow=335 psi. Each nail can resist a shear force of 395 lb.
Part A
Determine the maximum loads P that it can support.
Express your answer to three significant figures and include appropriate units.
Part B
What is the maximum allowable spacing s of the nails used to hold the top flange to the web? (Consider only regions AC and BD.)
Express your answer to three significant figures and include appropriate units.
Part C
What is the maximum allowable spacing s of the nails used to hold the bottom flange to the web? (Consider only regions AC and BD.)
Express your answer to three significant figures and include appropriate units.
In: Other
Normal Forms (a) Briefly describe 1NF, 2NF and 3NHF
3. Normal Forms
(a) Briefly describe 1NF, 2NF and 3NHF
(b) The following statements are in relation to the second normal form (2NF). Which ones are true? (
1) The table also has to be in INF
2) The table also has to be in 3NF
3) The table is only allowed to have atomic values in its cells
4) The primary key is not allowed to consist of multiple attributes.
5) Every non-key attribute depends on the complete primary key
6) Every non-key attribute is only allowed to be dependent on the primary key but not on another non-key attribute
7) The table is not allowed to have a foreign key attribute
8) If a table is in INF and does not have a multi-part primary keys, then i is automatically also in 2NF.
9) If a table is in 2NF and does not have a multi-part primary key, then it is automatically also in 3NF 1
0) The primary key is not allowed to be NULL in any row of a table
(c) Given the following table:
(i) Briefly describe which normal form the table in 3(c) is in?
(ii) Convert the table in 3(c) nto Third Normal Form (3NF) and justify your decisions
In: Other