BUS470 WARSING TEST 1 QUIZ & CONNECT QUESTIONS

Consider a process consisting of three resources. Assume there exists unlimited demand for the product. Resource 1 = processing time of 6 minutes/unit. Resource 2 = processing time of 3 minutes/unit. Resource 3 = processing time of 5 minutes/unit. Each resources are staffed by one worker and each worker gets paid $12 per hour. What is the cost of direct labor? What is the labor content? How much idle time does the worker at resource 3 have per unit? What is average labor utilization? Assume the demand rate is 20 units per hour. What is the take time? Assume the demand rate is 20 units per hour. What is the target manpower?

$3.60 per unit 14 minutes per unit 1 minute per unit 77.78 percent 3 minutes per unit 4.67 minutes per unit

It takes a lawyer 120 minutes to serve one customer. Demand is 2 customers per eight hour day. The lawyer has a wage rate of $200 per hour. What is the cost of direct labor for the lawyer expressed in $ per customer?

$800 per customer

Which, if any, of these statements about process capability indices Cp and Cpk are correct? (1) Cp compares the process output distribution to the specification range, but does not account for process centering around the target value. (2) Cpk accounts for the difference between the mean process output value and the target value. (3) Both Cp and Cpk use a 6-sigma standard on either side of the mean process output. only (1) only (2) only (3) (1) and (2) (1) and (3) (2) and (3) (1), (2), and (3) none of the above

(1) and (2)

For 40 days in the summer, you are working in a small, student-run company that sends out merchandise with university branding to alumni around the world. Every day, you take a sample of 50 shipments that are ready to be shipped to the alumni and inspect them for correctness. Across all days, the average percentage of incorrect shipments is 5%. What would be the center line for a p-chart? 40 50 0.05 2.5 none of these

0.05

Consider again the company making tires for bikes is concerned about the exact width of their cyclocross tires. The company has a lower specification limit of 22.8 mm and an upper specification limit of 23.2 mm. The standard deviation is 0.15 mm and the mean is 23 mm. What is the probability that a tire will be too narrow? What is the probability that a tire will be too wide? What is the probability that a tire will be defective?

0.091211 0.091211 0.182422

You are working in a small, student-run company that sends out merchandise with university branding to alumni around the world. Every day, you take a sample of 50 shipments that are ready to be shipped to the alumni and inspect them for correctness. Across all days, the average percentage of incorrect shipments is 5%. What would be the upper control limit for a p-chart? 0 0.05 0.03082207 2.5 0.142466

0.142466

Consider a process consisting of three resources. Assume there exists unlimited demand for the product. Resource 1 = processing time of 6 minutes per unit. Resource 2 = processing time of 3 minutes per unit. Resource 3 = processing time of 5 minutes per unit. All three resources are staffed by one worker. The flow diagram is shown above. What is the capacity of resource 2? What is the bottleneck in the process? Utilization of resource 2? How long does it take the process to produce 200 units starting with an empty system, assuming this is a worker-paced process?

0.333 units per minute 1 resource 50 percent 1,208 minutes

The table below provides the time stamps for the 8 people who called a reservation desk for a ferry service between 8:00 am and 8:20 am. Based on the data in the table, what is the flow rate of callers? Caller Time in Time out 1 8:01 8:05 2 8:02 8:07 3 8:06 8:08 4 8:09 8:12 5 8:10 8:15 6 8:12 8:20 7 8:16 8:19 8 8:17 8:19

0.4 per minute

A company making tires for bikes is concerned about the exact width of their cyclocross tires. The company has a lower specification limit of 22.8 mm and an upper specification limit of 23.2 mm. The standard deviation is 0.15 mm and the mean is 23 mm. What is the process capability index for the process?

0.4444

(Part 1/2)You've been hired as an operations consultant by Patch-Em-Up emergency health services. Patch-Em-Up employs 8 nurses to treat customers. A nurse takes 10 minutes, on average, to treat a patient at Patch-Em-Up. After being treated by a nurse, patients leave Patch-Em-Up and are either sent home or referred to Box-O-Docs Hospital, next door to Patch-Em-Up. Past data has determined that, during the late afternoon peak hours, Patch-Em-Up serves 40 patients/hour, on average, and there are an average of 20 patients at Patch-Em-Up, either waiting to check in with a nurse, or being treated. What is the average flow time per patient at Patch-Em-Up? 0.5 hours 800 hours 800 minutes 2 hours cannot be determined from data

0.5 hours

A small, privately owned Asian company is producing a private-label soft drink Yoggo. A bottling line puts the soft drinks into plastic bottles and then packages the bottles into boxes holding 10 bottles each. The bottling line is comprised of the following 4 steps: (1) the bottling machine takes 1 second to fill a bottle, (2) the lid machine takes 3 seconds to cover the bottle with a lid, (3) a labeling machine takes 3 seconds per bottle, and (4) the packaging machine takes 4 seconds to place a bottle into a box. When a box has been filled with 10 bottles, a worker tending the packaging machine removes the filled box and replaces it with an empty box. Assume that the time for the worker to remove a filled box and replace it with an empty box is negligible and hence does not affect the capacity of the line. (sec's are seconds per bottle) Proc. step #machines Seconds Bottling 1 1 Apply a lid 1 3 Labeling 1 3 Packaging 1 4 what is the capacity (bottles/hour) at the resource "apply a lid"? what is the bottleneck in this process? assuming unlimited demand, what would be the utilization at resource "apply a lid"? assume the process started empty and that this is a machine-paced process. how long would it take to produce 500 bottles?

1,200 bottles per hour packaging 900 bottles per hour 75 percent 2,012 seconds

(Part 3/3)It is now flu season at Patch-Em-Up emergency health services. Accordingly, the demand rate at the Patch-Em-Up clinic has increased to 60 patient arrivals per hour. In addition, the time that nurses spend with patients has increased, so Patch-Em-Up has made a number of changes. First, they hired more nurses, but they also assigned some of these nurses to perform an initial "triage" interview with patients before having the patient see a more highly trained nurse practitioner. Patch-Em-Up currently has 6 registered nurses working in the triage resource pool, plus 10 nurse practitioners (NPs). A triage nurse spends 5 minutes with each patient, on average, before sending the patient to the pool of NPs. An NP spends an average of 12 minutes with each patient. Given the data in the problem, what is the utilization of the NP resource pool in this new, reconfigured version of the process? 83% 100% 120% 144% cannot be determined from data

100%

An automated car wash serves customers with the following serial process: pre-treat, wash, rinse, wax, hand dry. Each of these steps is performed by a dedicated machine except for the hand dry step, which is performed manually on each car by one of three workers. The steps of the process have the following processing times: Pre-treat: 1 minute per car Wash: 5 minutes per car Rinse: 2 minutes per car Wax: 3 minutes per car Hand dry: 8 minutes per car If the car wash has a demand of 15 cars per hour, what is the flow rate of the process? If the car wash has a demand of 15 cars per hour, what is the utilization of the machine that performs the Wax process?

12 customers per hour 60 percent

It takes a barber 15 minutes to serve one customer. Assuming the demand for the barber is 2 customers per hour, what is the flow rate? Utilization? Cycle time?

2 customers per hour 50 perent 30 minutes per customer

CodeDesk Inc matches programmers with freelance jobs. They have 30 employees who staff their online chat room. They receive on average 240 chat requests per hour and the average chat session takes 5 minutes to complete (i.e. from start to finish). On average how many chat sessions are active (i.e., started but not completed)?

20 chat sessions

It takes a barber 15 minutes to serve one customer. What is the capacity of the barber expressed in customers per hour?

4 customers per hour

*use table above* what is the flow time of callers?

4.0 minutes

A campus deli serves 300 customers over its busy lunch period from 11:30 am to 1:30 pm. A quick count of the number of customers waiting in line and being served by the sandwich makers shows that an average of 10 customers are in process at any point in time. What is the average amount of time that a customer spends in process?

4.0 minutes

For 120 consecutive days, a process engineer has measured the temperature of champagne bottles as they are made ready for serving. Each day, she took a sample of 8 bottles. The average across all 960 bottles (120 days, 8 bottles per day) was 46 degrees Fahrenheit. The standard deviation across all bottles was 0.8 degrees Fahrenheit. When constructing an X-bar chart, what would be the center line? When constructing an X-bar chart, what would be the upper control limit?

46 degrees Fahrenheit 46.8485 degrees Fahrenheit

Glenn Dental Clinic provides general dental care to residents of Philadelphia on a walk-in basis. The clinic has started receiving complaints from patients that the waiting time is too long and has asked you to investigate whether this problem can be solved. Upon arrival, customers first receive a series of paperwork from the receptionist and fill out relevant information such as personal health records and insurance provider. The form is then handed back to a receptionist who enters the information into the computer system for the dentist to see. A dental assistant then takes an X-ray from the patient. A dentist then performs the check-up and discusses any issues with the patient.Based on conversations with staff members at the clinic, you have obtained the following information on the process: It takes about 5 minutes for a customer to fill out the paperwork. Entry of information on the paperwork into the system and verification with past records takes another 5 minutes for a receptionist. There are two receptionists. It takes 15 minutes on average for the dental assistant to take an X-ray. There are three dental assistants on shift at any moment. There are ten dentists working at the clinic. Each check-up takes 30 minutes on average. (Info below = resource, process, staffing (#workers), processing time (min/patient)) Self serve - paperwork - - 5 receptionists - data entry - 2, 5 dental assistant - xray - 3,15 dentist - checkup - 10, 30 Assume that there exists unlimited demand, unless otherwise stated. Assume further that the dentist gets paid $100 per hour while receptionist and dental assistant get paid $30 per hour. What is the labor content? What is the cost of direct labor?

50 minutes per patient $95.80 per patient

(Part 2/3)It is now flu season at Patch-Em-Up emergency health services. Accordingly, the demand rate at the Patch-Em-Up clinic has increased to 60 patient arrivals per hour. In addition, the time that nurses spend with patients has increased, so Patch-Em-Up has made a number of changes. First, they hired more nurses, but they also assigned some of these nurses to perform an initial "triage" interview with patients before having the patient see a more highly trained nurse practitioner. Patch-Em-Up currently has 6 registered nurses working in the triage resource pool, plus 10 nurse practitioners (NPs). A triage nurse spends 5 minutes with each patient, on average, before sending the patient to the pool of NPs. An NP spends an average of 12 minutes with each patient. What is the capacity of this new, reconfigured version of the process? 5 minutes/patient 12 minutes/patient 17 minutes/patient 40 patients/hour 50 patients/hour 72 patients/hour none of these

50 patients per hour

Mr. K's is a very popular hair salon. It offers high-quality hairstyling and physical relaxation services at a reasonable price, so it always has unlimited demand. The service process includes five activities that are conducted in the sequence described below. (The time required for each activity is shown in parenthesis): Activity 1: Welcome a guest and offer homemade herb tea. (10 minutes) Activity 2: Wash and condition hair. (10 minutes) Activity 3: Neck, shoulder, and back stress release massage. (10 minutes) Activity 4: Design the hairstyle and do the hair. (25 minutes) Activity 5: Check out the guest. (5 minutes) Three servers (S1, S2, and S3) offer the services in a worker-paced line. The assignment of tasks to servers is the following: S1 does Activity 1. S2 does activities 2 and 3. S3 does activities 4 and 5. What is the labor content? What is the average labor utilization? At a wage rate of $20 per hour, what is the cost of direct labor per customer? Mr. K considers hiring a new employee to help any one (and only one) of the servers without changing the tasks performed by each served. What would the new direct labor cost be? Mr. K also contemplates redesigning the assignment of tasks to servers. For this, Mr. K is evaluating the reassignment of Activity 5 from S3 to S1. What would the new direct labor cost be?

60 minutes per customer 66.70 percent $30 per customer $26.67 per customer $25 per customer

Consider the baggage check-in process of a small airline. Check-in data indicates that from 9am to 10am, 240 passengers checked in. Moreover, based on counting the number of passengers waiting in line, airport management found that the average number of passengers waiting for check-in was 30. How long did the average passenger have to wait in line?

7.5 minutes

A community health system's nurse team consists of 12 nurses working in the local community. It takes a nurse 1.5 hours to complete one patient visit (including travel times and breaks). What is the capacity of the nurse team over the course of a 9 hour work day? Assuming the demand for the nurses is 60 patients per day, what is the utilization of the nurse team? What is the cycle time?

72 per 9 hour work day 83 percent 9.0 minutes per patient

(Part 2/2)You've been hired as an operations consultant by Patch-Em-Up emergency health services. Patch-Em-Up employs 8 nurses to treat customers. A nurse takes 10 minutes, on average, to treat a patient at Patch-Em-Up. After being treated by a nurse, patients leave Patch-Em-Up and are either sent home or referred to Box-O-Docs Hospital, next door to Patch-Em-Up. Past data has determined that, during the late afternoon peak hours, Patch-Em-Up serves 40 patients/hour, on average, and there are an average of 20 patients at Patch-Em-Up, either waiting to check in with a nurse, or being treated. What is the utilization of the nurse resource pool at Patch-Em-Up? 15% 25% 74% 83% 100% 120% cannot be determined from data

83%

A large-scale bakery is laying out a new production process for their packaged bread, which they sell to several grocery chains. It takes 12 minutes to bake the bread. How large of an oven is required so that the company is able to produce 4200 units of bread per hour (measured in the number of units that can be baked simultaneously)?

840 units

Last year there were 3,400,000 visitors to a national park and, on average, each visitor spent 22 hours in the park. Last year, on average, how many visitors were in the park?

8539 visitors

Four regional less-than-truckload (LTL) carriers handle shipments traveling from Lexington, Kentucky, to Springfield, Illinois. All four companies say that their normal service time is to deliver these shipments in 2 business days. The four carriers compete with each other on the basis of price and service quality rating as shown in the table below. The price reported in the table is the (non-discounted) cost per hundredweight (cwt) of sending a 600-pound shipment from Lexington to Springfield at freight class 70. The service quality rating measures a carrier's loss and damage record and goes from 0 (poor quality) to 100 (high quality). Carrier Price Serv.Qual A $103.9 95 B $98.50 91 C $127.20 98 D $111.40 94 Select all that are on the efficient frontier A B C D

A, B, C

Process data from the Xootr scooter production process is shown below. Specifically, you are given a histogram and various process output statistics on the height (in mm) of steer supports produced by the process. target = 79.950 tolerance = 0.50 LSL = 79.900 USL = 80.000 min = 79.913 max = 79.954 mean = 79.937 SD = 0.00806 Compute the Cp capability index for this data. Compute the Cpk capability index for this data. The process that generated this data would be considered "Six Sigma capable" (T/F)

Cp = 2.07 Cpk = 1.53 True

Which of the following inefficiencies in a bank's operations results from variability? Customers directed to the wrong associate for a particular service Associates read the terms and conditions of each account to the customer Customers incorrectly list information on forms Employee work schedules set a week in advance

Customers incorrectly list information on forms

For the purpose of process analysis, which of the following measures would be considered an appropriate flow unit for analyzing the operation of a coffee shop? Square footage of the store Number of employees working each week Number of hours the store is open each week Number of customers served each week

Number of customers served each week

For the purpose of process analysis, which of the following measures would be considered an appropriate flow unit for analyzing the main operation of a local accounting firm? Number of accountants working each week Number of tax returns completed each week Number of customers with past-due invoices Number of reams of paper received from suppliers

Number of tax returns completed each week

Use Table 9.1 to solve the problem. Consider again our company making tires for bikes is concerned about the exact width of their cyclocross tires. The company has a lower specification limit of 22.8 mm and an upper specification limit of 23.2 mm. The standard deviation is 0.15 mm and the mean is 23 mm. The company now wants to reduce its defect probability to 0.01. To what level would they have to reduce the standard deviation in the process to meet this target? 0.076923 0.083333 between 0.076923 and 0.08333 between 0.80000 and 0.86667

between 0.076923 and 0.08333

Which of the following items would be considered a resource in the operations of a soft drink manufacturer?

bottling machines

Which of the following inefficiencies in a grocery store's operations results from inflexibility? Leftover fruits and vegetables Delivery delays from the warehouse A surge in customer arrivals at one time Employee work schedules set a week in advance

employee work schedules set a week in advance

Which of the following items would be considered an input in the operations of a soft drink manufacturer? brand image bottling machines empty bottles workers

empty bottles

Custom-built windows are designed and produced for the unique needs of a particular building. Which dimension of the customer utility function is particularly emphasized with the concept of "custom-built"? performance fit price location

fit

Over the course of a day, fans pour into a NASCAR venue at the rate of 8,000 people per hour. The rate at which fans leave the venue must be less than 8,000 people per hour must be exactly 8,000 people per hour must be more than 8,000 people per hour could be more or less than 8,000 people per hour

must be exactly 8,000 people per hour

Which of the following items would be considered an input in the operations of a doctor's office? examination table nurse needle stethoscope

needle

From the perspective of process analysis, which of the following could be appropriate flow units for a hardware store? number of workers number of cash registers number of customers number of suppliers

number of customers

Over the course of a month, which of the following is most likely to describe an appropriate flow unit for a process analysis of a hospital? # of physicians # of beds sq. footage of building # of patients

number of patients

(Part 1/3)It is now flu season at Patch-Em-Up emergency health services. Accordingly, the demand rate at the Patch-Em-Up clinic has increased to 60 patient arrivals per hour. In addition, the time that nurses spend with patients has increased, so Patch-Em-Up has made a number of changes. First, they hired more nurses, but they also assigned some of these nurses to perform an initial "triage" interview with patients before having the patient see a more highly trained nurse practitioner. Patch-Em-Up currently has 6 registered nurses working in the triage resource pool, plus 10 nurse practitioners (NPs). A triage nurse spends 5 minutes with each patient, on average, before sending the patient to the pool of NPs. An NP spends an average of 12 minutes with each patient. Which resource pool is the bottleneck in this process? triage nurses nurse practitioners neither triage nor NP cannot be determined from data

nurse practitioners

A small mortgage lender has one receptionist, four loan officers, and two office managers. When applicants apply for a new loan in person, they first fill out paperwork with the receptionist. Then the applicants meet with one of the loan officers to discuss their needs. The loan officer spends additional time processing the application after the applicants leave the office. Finally, the application must be reviewed by an office manager before it can be approved. The following table lists the processing times at each stage. The office is open for eight hours per day, five days per week. (staffing = # of employees, activity time = hours per loan) Resource Staffing | Activity time Receptionist 1 1 Loan officers 4 7 Office mngrs 2 4 What is the bottleneck of the process? Assuming unlim'd demand, what is the process flow rate (in loans per week)? If the customer demand is 18 loans per week, what is the utilization of the office managers resource? assuming that the office currently has no backlog of loans that is is processing, how long will it take to complete 10 loans?

office managers 20 loans per week 90 percent 30 hours

Which of the following items would be considered a resource in the operations of a movie theater? popcorn projector printer ink floor cleaner

projector

For the purpose of process analysis, which of the following measures would be considered an appropriate flow unit for analyzing the main operation of a gas station? *you can select more than 1 sales dollars number of gas pumps number of employees working each day number of customers served per day

sales dollars, number of customers served per day

Yi is fixing up his road bike to prepare for a triathlon. He looks at his tires and wonders how much he should inflate them. Which of the following variables is an outcome variable? the outside temperature the rolling resistance the # of times he presses the pump the size of the tire

the rolling resistance

A national restaurant chain has just opened a sit-down location at Chicago's O'Hare International Airport. Next to the sit-down location, it has also established a "to-go" section where travelers can purchase pre-made sandwiches and salads as well as drinks and snacks. Which dimension of the customer utility function is particularly emphasized with the "to-go" section? fit timing price performance

timing

You start a summer job serving ice cream at the shore. The manager notices that since you started the job, the average portion size given to customers has gone up substantially. This is a result of assignable cause variation. (T/F)

true