A work sampling study is to be conducted on rush-hour traffic (4:00 pm to 6:59 p.m.) five days per week. The study will encompass 40 days. Determine the day, hour, and minute for 10 observations using the following procedure and table. 1 7264 2801 8901 4627 8387 1 6912 2 3491 1192 3 4715 2486 7547 2093 4617 2664 3856 0064 0575 2776 1546 1950 7209 0938 1844 1123 1908 2326 0120 4237 7343 6083 2108 2044 4 1632 5 8510 6 3950 1328 7. 7871 8 2716 1396 9 2935 8259 10 8533 9957 9585 11 0508 1640 2768 12 2951 0131 4359 7752 0521 8511 3956 7354 9912 3957 8818 0249 7728 3761 4028 9207 1039 2159 2438 4666 9530 3352 3095 4421 3018 a. Read two-digit numbers going down the first two digits of column 5 (eg. 46 20 38), and then down the second two digits of that column (et, 27 93 56 ) for days. b. For hours, read one-digit numbers going from left to right across row 1 and then across row 2. (Read only 4s, 5s, and 6s.) c. For minutes, read two-digit numbers going down column 6, first using the last two digits (e.g. 87 17 64), and, after exhausting those numbers, repeat using the first two digits of that column (eg. 83 46 00 19.) Arrange your times chronologically by day then hou

A work sampling study is to be conducted on rush-hour traffic (4:00 pm to 6:59 p.m.) five days per week. The study will encompass 40 days. Determine the day, hour, and minute for 10 observations using the following procedure and table. 1 7264 2801 8901 4627 8387 1 6912 2 3491 1192 3 4715 2486 7547 2093 4617 2664 3856 0064 0575 2776 1546 1950 7209 0938 1844 1123 1908 2326 0120 4237 7343 6083 2108 2044 4 1632 5 8510 6 3950 1328 7. 7871 8 2716 1396 9 2935 8259 10 8533 9957 9585 11 0508 1640 2768 12 2951 0131 4359 7752 0521 8511 3956 7354 9912 3957 8818 0249 7728 3761 4028 9207 1039 2159 2438 4666 9530 3352 3095 4421 3018 a. Read two-digit numbers going down the first two digits of column 5 (eg. 46 20 38), and then down the second two digits of that column (et, 27 93 56 ) for days. b. For hours, read one-digit numbers going from left to right across row 1 and then across row 2. (Read only 4s, 5s, and 6s.) c. For minutes, read two-digit numbers going down column 6, first using the last two digits (e.g. 87 17 64), and, after exhausting those numbers, repeat using the first two digits of that column (eg. 83 46 00 19.) Arrange your times chronologically by day then hou

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Your twenty observations of Dr. Knowitall reveal the following information. Assume that the estimate is to be within 5 percent of the true proportion 96 percent of the time Activity Observed Number of Times Observed With patient 6 Reviewing test results 5 On phone 5 Idle 3 Away on emergency 1 Not available 1 Total 21 Calculate the sample size needed to estimate the proportion of time Dr. Knowitall spends away on emergencies.
8. A teller at a drive-up window at a bank had the following service times (in minutes) for 20 randomly selected customers: SAMPLE 1 2 3 4 4.5 4.6 4.5 4.7 4.2 4.5 4.6 4.6 4.2 4.4 4.4 4.8 4.3 4.7 4.4 4.5 4.3 4.3 4.6 4.9 Select a chart to monitor the central tendency of the process, what are the 3-sigma control limits using a mean chart? Keep 3 decimal places. Select one: a. LCL = 4.212, UCL = 4.788 b. LCL = 4.414, UCL = 4.586 c. LCL = 4.245, UCL = 4.755 d. None of the other options. e. LCL = 4.385, UCL = 4.615
The Money Pit Mortgage Company is interested in monitoring the performance of the mortgage process. Fifteen samples of five completed mortgage transactions each were taken during a period when the process was believed to be in control. The times to complete the transactions were measured. The means and ranges of the mortgage process transaction times, measured in days, are as follows: Sample Mean Range ew an example 1 2 16 12 7 12 Get more help. 3 6 5 4 5 6 7 8 9 15 10 10 13 14 11 9 10 16 13 16 11 Subsequently, samples of size 5 were taken from the process every week for the next 10 weeks. The times were measured and the following results obtained: D Sample Mean Range 16 9 8 17 12 12 18 19 13 7 7 5 20 15 13 MacBook Pro Click the icon to view the table of factors for calculating three-sigma limits for the x-chart and R-chart. a. Construct the control charts for the mean and the range, using the original 15 samples. Set up the R-chart by specifying the center line and three-sigma control…
How reliable is the result of work sampling activity in determining working time and idle time of the operator?
A library administrator wants to determine the proportion of time the circulation clerk is idle. The following information was gathered randomly by using work sampling: Day Number of TimesClerk Busy Number of TimesClerk Idle Total Number ofObservations Monday Tuesday Wednesday Thursday Friday Saturday 8 7 9 7 8 6 2 1 3 3 2 4 10 8 12 10 10 10 If the administrator wants a 95 percent confidence level and a degree of precision of +- 4 percent, how many more observations are needed?
Management of Mittel Rhein AG of Köln, Germany, would like to reduce the amount of time between when a customer places an order and when the order is shipped. For the first quarter of operations during the current year the following data were reported: Inspection time- 0.7 daysWait time (from order to start of production) -16.6 daysProcess time -2.7 daysMove time -1.3 daysQueue time- 4.5 daysRequired:1. Compute the throughput time. (Round your answer to 1 decimal place.) 2. Compute the manufacturing cycle efficiency (MCE) for the quarter. (Round your answer to the nearest whole percentage (i.e., 0.12 should be entered as 12).) 3. What percentage of the throughput time was spent in non–value-added activities? (Round your answer to the nearest whole percentage (i.e., 0.12 should be entered as 12).) 4. Compute the delivery cycle time. (Round your intermediate calculations and final answer to 1 decimal place.) 5. If by using Lean Production all queue…
15-19 A new president at Big State University has made student satisfaction with the enrollment and registration process one of her highest priorities. Students must see an advisor, sign up for classes, obtain a parking permit, pay tuition and fees, and buy textbooks and other supplies. During one registration period, 10 students every hour are sampled and asked about satisfaction with each of these areas. Twelve different groups of students were sampled, and the number in each group who had at least one complaint is as follows: 0, 2, 1, 0, 0, 1, 3, 0, 1, 2, 2, 0. Develop upper and lower control limits (99.7%) for the proportion of students with complaints.
Prepare a run diagram for this emergency call data. Use five-minute intervals (i.e., count the calls received in each five- minute interval. Use intervals of 0-4, 5-9, etc.). Note: Two or more calls may occur in the same minute; there were three operators on duty this night. What can you conclude from the run chart? Call Time Call Time Call Time 1 2 3 4 5 6 7 8 9 10 11 1:03 1:06 1:09 1:11 1:12 1:17 1:21 1:27 1:28 1:29 1:31 12 13 14 15 16 17 18 19 20 21 22 1:36 1:39 1:42 1:43 1:44 1:47 1:48 1:50 1:52 1:53 1:56 23 24 25 26 27 28 29 30 31 32 33 1:56 2:00 2:00 2:01 2:02 2:03 2:03 2:04 2:06 2:07 2:08 Call 34 35 36 37 38 39 40 41 42 Time 2:08 2:11 2:12 2:12 2:13 2:14 2:14 2:16 2:19 a. re-organize the above data for your analysis (using five-minute intervals; 0-4, 5-9, etc) b. Provide your diagram that shows the number of emergency calls by eacn five-minute intervals from 1am to 2:20am c. what can you conclude from the chart?
Time left 1:08:00 A can filling process at a beverage manufacturing factory is assumed to be in control with limits of 84 +3 had sample averages for the x-bar chart of the following: 87.1,87, 87.2, 89, 90, 88.5, 89.5, and 88. Which of the following statement below are correct? O a. Process mean is out-of-control O b. Not enough information to determine O c. Process mean is in-control O d. None is correct NEXT PAGE AGE o 日自 nere to search
An analyst has been asked to prepare an estimate of the proportion of time that a turret lathe operator spends adjusting the machine, with 90% confidence level. Based on previous experience, the analyst believes the proportion will be approximately 30%. a. If the analyst uses sample size of 400 observations, what is the maximum error that will be associated with the estimate? b. What sample size would the analyst need in order to have the maximum error be no more than +/- 5%?
Why is it necessary to include units when reportingscientific measurements?
Prepare a run diagram for this emergency call data. Use five-minute intervals (i.e., count the calls received in each five-minute interval. Use intervals of 0 to 4, 5 to 9, etc.). Note: Two or more calls may occur in the same minute; there were three operators on duty this night. What can you conclude from the run chart?