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Descriptive Statistics

This problem provides details on calculating the critical path and the length of critical path.

Given the below activities which activities are on the critical path? What is the length of the critical path? Activity Immediate Predecessors Time (days) A - 3 B A 4 C

Descriptive Stastistics: Minimizing

Minimize the following: Z=2A + 4B 4A+6B>=120 2A+6B>=72 B>=10

Calculation of descriptive statistics

Always get overwhelmed by the amount of material when covered at a comprehensive level. Attached is the study material of what to be prepared to cover at the conclusion of this course. I have worked through them but get stumped at several points. Can you provide a systematic approach to these problems and provide a reference to

Economic Order Quantity for a Product

A large distributor of oil-well drilling equipment operated over the past 2 years with EOQ policies bases on an annual holding cost rate of 22%. under the EOQ policy, a particular product has been ordered with a Q*=80. A recent eval of holding costs shows that because of an increase in the interest rate associated with bank loan

Finding Evidence to Reject Agencies Claims

1. A regulatory agency claims the mean weekly telemarketing calls a citizen receives is 18 or less. A consumer advocacy group surveyed 81 citizens and found that the mean number of calls they received weekly was 19. At a level of significance of alpha = 0.05 is there sufficient evidence to reject the agencies claim? Assume

Inventory management: Example problem

Linda Lechner is in charge of maintaining hospital supplies at General Hospital. During the past year the mean lead time demand for bandage BX-5 was 60. Furthermore, the standard deviation for BX-5 was 7. Linda would like to maintain a 90% service level. What safety stock level given the statistics? A. 1 B. 9 C. 150 D. 13

Which person is relatively taller in their group

Please provide a step by step resolution to this problem. Which person is relatively taller in their group, a man 75 inches tall (xbar = 70 and s = 4.0) or a woman 70 inches tall (xbar = 65 and s = 3.5)? (Note: xbar represents the mean value of the sample of heights collected.)

Ulysses Mortgage Associates: Credit Scores

The credit score of a 35 year old applying for a mortgage at Ulysses Mortgage Associates is normally distributed with a mean of 600 and a standard deviation of 100. (a) Find the credit score that defines the upper 5 percent. (b) Seventy-five percent of the customers will have a credit score higher than what value? (c) With

A firm is considering three capacity alternatives: A,B & C.

A firm is considering three capacity alternatives: A,B & C. Alternative A would have an annual fixed cost of \$150,000 and variable costs of \$28 per unit. Alternative B would have annual fixed costs of \$145,000 and variable costs of \$19 per unit. Alternative C would have fixed costs of \$100,000 and variable costs of \$15 per unit.

Dataset and determine the following values to two decimal places.

Please see attachment ... I need help with data sets. Please use the dataset and determine the following values to two decimal places: Mean Median Mode Standard Deviation Range DATA: 94 75 85 78 74 63 89 62 68 100 92 70 83 73 77 95 88 92 80 64 92 62 97 65 80 100 85 79 68 74

How many activities are included in the monthly budget

See the attachment for a resource in answering the following questions 5. Referring to the attachment, How many activities are included in the monthly budget for month four? (note: the ES, LS, and t are presented in months) A. 1 B. 2 C. 3 D. impossible to tell 6. What is the monthly budget for mon

A plant can manufacture four different products

For each of the following changes, calculate the new optimal profit (do not make any additional Solver runs). 4. A plant can manufacture four different products: A, B, C, and D in any combination. Each product requires time on each of four machines in minutes per pound of product, as shown in the following table. Each machine

Constraint for a resource that is binding in optimum

Suppose we have a constraint for a resource that is binding in optimum. Find a scenario under which the optimal profit will remain unchanged even if we have more of that resource. Draw a graph that represents scenario!

Statistics: Explained and Unexplained Variations

Explain each term: (a) explained variation; (b) unexplained variation; (c) factor; (d) treatment.

The University Computing Center

The University Computing Center is open 24 hours per day. Staffing requirements vary by four-hour time periods and by day. The requirements for a two-day cycle are given in the table provided in file (These requirements repeat every two days). Staff can work either a four-hour shift or an eight-hour shift. The "eight-hour people

An individual investor has just obtained a \$100,000 (after-tax) bonus from her employer and is looking for investment opportunities for these funds.

An individual investor has just obtained a \$100,000 (after-tax) bonus from her employer and is looking for investment opportunities for these funds. The investor is about five years from retirement and would like to choose investments that are somewhat safe, yet offer a worthwhile return. A close friend of hers who is an inves

Bryson Foods Maximizing Profits

Bryson Foods produces two types of turkey cutlets for sale to fast food restaurants. Each type of cutlet consists of white meat and dark meat. Cutlet 1 sells for \$7 per pound and must consist of at least 70% white meat. Cutlet 2 sells for \$5 per pound and must contain at least as much white meat as dark meat. Based on past deman

Turning Optimal Decisions into Real Actions

Which factors are important in successfully turning optimal decisions obtained from models into real actions? Provide two factors. Explain your answers.

The distribution of scores on a standardized aptitude test is approximately normal with a mean of 520 and a standard deviation of 100.

The distribution of scores on a standardized aptitude test is approximately normal with a mean of 520 and a standard deviation of 100. What is the minimum score needed to be in the top 20% on this test? Carry your intermediate computations to at least four decimal places, and round your answer to the nearest integer.

The Fix-It Shop

The Fix-It Shop has added a fourth repairman, Davis. Solve the accompanying cost table for the new optimal assignment of workers to projects. PROJECT Worker 1 2 3 Adams \$11 \$14 \$6 Brown 8 10

Transportation and Assignment Models

Don Levine Corporation is considering adding an additional plant to its three existing facilities in Decatur, Minneapolis, and Carbondale. Both St. Louis and East St.Louis are being considered. From Existing Plants O Decatus Minneapolis Carbondale Demand Blue Earh

Transportation and Assignment Models

The management of the Executive Furniture Corporation decided to expand the production capacity at its Des Moines factory and to cut back production at its factories. It also recognizes a shifting market for its desks and revises the requirements at its three warehouses. Data for Problem: New Warehouse Requirements

Transportation and Assignment Models

The management of the Executive Furniture Corporation decided to expand the production capacity at its Des Moines factory and to cut back production at its factories. It also recognizes a shifting market for its desks and revises the requirements at its three warehouses. Data for Problem: New Warehouse Requirements

Control Limits and Standard Deviation

A quality control inspector at the Beautiful Shampoo Company has taken three samples with four observations each of the volume of shampoo bottles filled. The data collected by the inspector and the computed means are shown here: Samples of Shampoo Bottles/Volume in Ounces Observation 1 2

The Arden County, Maryland, superintendent of education is responsible for assigning students to the three high schools in his county.

The Arden County, Maryland, superintendent of education is responsible for assigning students to the three high schools in his county. He recognizes the need to bus a certain number of students, for several sectors of the county are beyond walking distance to a school. The superintendent partitions the county into five geographi

Quitmeyer Electronics Incorporated manufactures the following six microcomputer peripheral devices: internal modems, external modems, graphics circuit boards, CD drives, hard disk drivers, and memory expansion boards.

Quitmeyer Electronics Incorporated manufactures the following six microcomputer peripheral devices: internal modems, external modems, graphics circuit boards, CD drives, hard disk drivers, and memory expansion boards. Each of these technical products requires time, in minutes, on three types of electronic testing equipment, as s

Absolute Zero Measurements and Ratio Level Data

Identify a research issue, problem, or opportunity that uses data that has absolute zero measurements, ratio level data. Could you make a couple suggestions so that I might have some guidance to write my paper on. Looking for some original ideas or new suggestions.

Waiting Line Models and Simulation

Please help with the given problem: It seems that simulation could handle any situation or study. But is that always true? Discuss instances in which a simulation would be important and useful, and then a situation in which a simulation would not be appropriate. Finally, include a set of rules you would use to determine if

Standard Cable Installation Appointment

The length of time to do a cable installation by Multi-cable Inc is normally distributed with a mean of 42.8 minutes and a standard deviation of 6.2 minutes. Multicable wants to establish how long a standard cable install appointment should be to insure that all of the work will be completed during the appointment 80% of the

Percentage of complete full service oil changes

The length of time to do a complete full service oil change at Speedy-Lube is normally distributed with a mean of 15.8 minutes and a standard deviation of 2.2 minutes. What percentage of complete full service oil changes will take less than 10 minutes? If 1000 cars had a complete full service oil change, how many would you e