A work sampling study of dockworkers must be set up. There will be a large number of random observations. However, for this exercise, determine an observation schedule (arranged chronologically) for six observations. Assume workers are on the docks for eight hours a day, and that the study will be done over a 60-day period. Use the random digits listed below. Day Hour 81 22 53 94 95 96 17 28 39 70 61 12 43 04 25 86 27 28 19 1 3 03 19 25 70 81 93 02 18 27 33 44 53 05 10 28 33 41 53 66 9 7 3 4 3 2 4 9 7 7 1 Minute

A work sampling study of dockworkers must be set up. There will be a large number of random observations. However, for this exercise, determine an observation schedule (arranged chronologically) for six observations. Assume workers are on the docks for eight hours a day, and that the study will be done over a 60-day period. Use the random digits listed below. Day Hour 81 22 53 94 95 96 17 28 39 70 61 12 43 04 25 86 27 28 19 1 3 03 19 25 70 81 93 02 18 27 33 44 53 05 10 28 33 41 53 66 9 7 3 4 3 2 4 9 7 7 1 Minute

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Projects A and B are mutually exclusive. The minimum attractive rate of return (MARR) is 12%. Using rate of return analysis, which project should be selected? If the image fails to load here, go to https://www.dropbox.com/s/ld6wctqieu8jgwp/ROR.jpg Year 0 1 2 3 4 ROR A - $750 $200 $200 $200 $600 17.68% B - $1,150 $300 $350 $400 $700 16.44% O Project A O Project B O Both Project A and B O Select none of the project. O Insufficient information to make a decision. B-A - $400 $100 $150 $200 $100 13.69%
The orthographic views of an object are shown below. a) Draw its isometric drawing using a pencil. Provide all important dimensions on your isometric drawing. b) You need to take pictures of all main steps and need to provide a step-by-step method to draw isometric drawing accompanied by pictures. 307303030 | 20 60 15 15 55 30 20 60 + 27.5 4 25 47.5 25 R20 20 T 15 60 016 120 R30 120 120 30
A time analyst observed a computer part assembly job for which the work methods have just been changed. The job is divided into four work elements. The element times (min) for first four cycles, recorded on a continuous basis, are shown in the following table with a performance rating (RF) for each element. Performance rating % (RF) Element Cycle 1 Cycle 2 Cycle 3 Cycle 4 1.38 1.60 1.71 1.49 100 2 0.25 0.35 0.30 0.56 120 3 0.65 0.58 0.54 0.57 105 4 0.75 0.81 0.74 0.88 90 (a) On the basis of the times observed through four cycles, determine the normal time for the job. (b) Calculate the standard time if there is a fatigue allowance of 15 % and a contingency allowance of 10%. (c) If a worker is employed on a 5 day, 37.5 hour/week with 1.5 hours per day for breaks, how many workers are needed for a daily production of 1500?
The number line below shows a value on a log scale. 10-5 10 103 102 10-1 100 101 10² 103 104 105 What is, approximately, the value of the point shown on the number line? x = Question Help: D Video D Post to forum Submit Question arch 米 11 144 14 24 41 %23 & 3 T Y K 01 96 近 R EI
Supercomp Ltd produces two computer models PC1086 and PC1186. The matrix A shows the cost per computer (in thousands of dollars) and B the production figures for the year 2010 (in multiples of 10,000 units.) Find a matrix C that shows the shareholders the cost per quarter (in millions of dollars) for raw material, labor, and miscellaneous. Quarter 1 2 3 4 PC1086 PC186 1.2 1.6 Raw Components 3 8 6 9 B PC1086 0.3 0.4 Labor 6 2 4 3 PC1186 0.5 0.6 Miscellaneous
Table 4 shows the job processing data which involves the jobs identification, processing time and due date for the jobs. Table 4: Job processing data Processing time (hours) Job Due date (hours) A 8 10 B 12 C 15 20 D 3 18 E 12 22 (i) Analyze the schedules suitable for the given data using earliest due date (EDD) and shortest processing time (SPT) rules. (ii) Based on the answer in Q4(b)(i), justify the most appropriate sequencing rule based on total and average tardiness analysis.
A resurfaced fl oor costs $5000 and will last 2 years. If money is worth 10 percent aftertaxes, how long must a new fl oor costing $19,000 last to be economically justifi ed? Thetax rate is 52 percent. For tax purposes a new fl oor can be written off in 1 year. Use sumof-the-years-digits depreciation. Use the capitalized cost method for your analysis.
Task 3-a: If you have four instruments used to measure a temperature of 50.02 C inside the factory. However, the instruments gave different readings for different trials as follows: Instrument 1 20 30 40 50 60 70 80 51 49 Instrument 2 49 49 49 49 49 49 49 49 49 Instrument 3 48.01 48.03 49.02 49.01 50.00 48.02 47.09 47.05 47.80 Instrument 4 17.01 17.02 17.09 17.03 17.01 17.03 15.09 19.02 17.00 1. Define the resolution of an instrument. 2. Define the sensitivity of an instrument, then explain how the sensitivity of an instrument can be calculated. 3. Define the accuracy of an instrument system and explain using your own words how the accuracies of different instruments are compared. 4. Define the precision of an instrument system and explain using your own words how the precisions for different instruments are compared.
In a study analyzed by the Statistics Consulting Center at Mutah University, a group of subjects was asked to complete a certain task on the computer. The response measured was the time to completion. The purpose of the experiment was to test a set of facilitation tools developed by the Department of Computer Science at the university. There were 10 subjects involved. With a random assignment, five were given a standard procedure using Fortran language for completion of the task. The other five were asked to do the task with the use of the facilitation tools. The data on the completion times for the task are given here. Group 1 Group 2 (Standard Procedure) (Facilitation Tool) 161 169 174 158 163 132 162 134 138 133 Assuming that the population distributions are normal and variances are the same for the two groups, support or refute the conjecture that the facilitation tools increase the speed with which the task can be accomplished.
Actual lengths of stay at a hospital's emergency department in 2009 are shown in the following table (rounded to the nearest hour). Length of stay is the total of wait and service times. Some longer stays are also approximated as 15 hours in this table. Hours Count Percent 1 18 3.40 2 58 10.94 3 82 15.47 4 118 22.26 85 16.04 6 64 12.08 7 37 6.98 8 19 3.58 18 3.40 10 14 2.64 15 17 3.21 Calculate the mean and variance for the random variable (length of stay). Round your answers to two decimal places (e.g. 98.76). Mean = i Variance = i 5.
Measurements and manipulated variables can vary continuously or may be sampled discretely. Select from the following: a. Driving a car b. Choose one of your favorite activities (skiing, basketball, making a cappue- cino, etc.) c. A stirred tank heater d. Beer fermentation
As an exercise, a student weighed several bunches of nails on a balance. The nails were not all the same size. Here are the student's data: 4. number of nails mass in grams 82 122 208 324 435 12 20 26 Prepare a plot of these data on the grid below or on the graph paper. Use "number of nails" as the independent variable and be certain to scale and label the axes correctly. Scale the axes starting at the origin; 0, 0. GO 20 向 12 円 Number of nails Cx) 2. 18 20 mass in