Sampling Techniques Worksheet For each description of sampling‚ decide if the sampling technique is A. Simple Random B. Stratified C. Cluster D. Systematic E. Convenience 1. In order to estimate the percentage of defects in a recent manufacturing batch‚ a quality control manager at Intel selected every 8th chip that comes off the assembly line starting with the 3rd‚ until she obtains a sample of 140 chips. 2. In order to determine the average IQ of ninth-grade students‚ a school psychologist
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APPM 3570 — Exam #1 — February 20‚ 2013 On the front of your bluebook‚ write (1) your name‚ (2) 3570/EXAM 1‚ (3) instructor’s name (Bhat or Kleiber)‚ (4) SPRING 2013 and draw a grading table with space for 4 problems. Do only 4 of 5 problems. On the front of your blue book‚ write down which 4 problems you are attempting‚ if you do more than 4 problems‚ only the first 4 problems done will be graded. Correct answers with no supporting work may receive little or no credit. Start each problem on a new
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Jet Copies DAYS TO REPAIR The days to repair component was calculated by using the probability distribution of repair times given. This was used along with a set of random numbers based on 100 breakdowns a year. Then‚ a vlookup was used and the probability distribution per day to come up with the days to repair‚ which varies based on the random number that excel generates. The random number represents the probability of how many days it would take to repair the copier. TIME BETWEEN BREAKDOWNS
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probability distribution. The squad is on duty 24 hours per day‚ 7 days per week: Time Between Emergency Calls (hr.) Probability 1 0.05 2 0.10 3 0.30 4 0.30 5 0.20 6 0.05 1.00 a. Simulate the emergency calls for 3 days (note that this will require a “running”‚ or cumulative‚ hourly clock)‚ using the random number table. b. Compute the average time between calls and compare this value with the expected value of the time between calls from the probability distribution. Why
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DataStor Case Study | | Team 1 | Case Study for DataStor Background DataStor‚ a data storage device and media manufacturer‚ produces a compact hard drive called DS1000‚ which stores 1GB of data. Their primary customer is Four-D‚ a national reseller of the drives. Four-D has rejected four shipments of drives from DataStor in the past 20 days. DataStor wants to understand why their shipments are being rejected. DataStor operates three 8-hour shifts‚ five days a week. Each shift
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represent actual decision-making under conditions of uncertainty for evaluating alternative courses of action based upon facts and assumptions. MONTE CARLO TECHNIQUE STEPS: 1. Setting up a probability distribution for variables to be analyzed. 2. Building a cumulative probability distribution for each random variable. 3. Generate random numbers . 4. Conduct the simulation experiment by means of random sampling 5. Repeat step 4 until the required number of simulation runs has been generated
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IENG 4562 Maintenance Engineering and Management September 17th‚ 2014 Alireza Ghasemi Assignment #1 (Chapter 1 &2) 1. Find the Laplace transform of the following functions: a. f(t) = ? ?/2 ???(?) b. h(t) = ? −5? + 2? 3?+1 − 9 2. A smoke detector is routinely inspected. Eighty percent of the detectors found inoperative had experienced a power surge‚ and twenty percent of those found in operating condition had experienced a power surge. 10 percent of the detectors inspected have failed. What is the
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Jet Copies Case Study 1. In Excel‚ use a suitable method for generating the number of days needed to repair the copier‚ when it is out of service‚ according to the discrete distribution shown. 2. In Excel‚ use a suitable method for simulating the interval between successive breakdowns‚ according to the continuous distribution shown. 3. In Excel‚ use a suitable method for simulating the lost revenue for each day the copier is out of service. 4. Put all of this together to simulate the lost revenue
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therefore advised to show all working. Section a Answer all the questions in the spaces provided. Working may be continued below the lines‚ if necessary. 1. [Maximum mark: 5] When the function q ( x) = x + kx 2 − 7 x + is divided by ( x +1) the remainder is seven times the remainder that is found when the function is divided by ( x + 2) . Find the value of k . ..................................................................... .................................................................
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| Basic math symbols Symbol | Symbol Name | Meaning / definition | Example | = | equals sign | equality | 5 = 2+3 | ≠ | not equal sign | inequality | 5 ≠ 4 | > | strict inequality | greater than | 5 > 4 | < | strict inequality | less than | 4 < 5 | ≥ | inequality | greater than or equal to | 5 ≥ 4 | ≤ | inequality | less than or equal to | 4 ≤ 5 | ( ) | parentheses | calculate expression inside first | 2 × (3+5) = 16 | [ ] | brackets | calculate expression inside first
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