A group of investors wants to develop a chain of fast-food restaurants. In determining potential costs for each facility‚ they must consider‚ among other expenses‚ the average monthly electric bill. They decide to sample some fast-food restaurants currently operating to estimate the monthly cost of electricity. They want to be 90% confident of their results and want the error of the interval estimate to be no more than $100. They estimate that such bills range from $600 to $2‚500. How large a sample
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Homework #4 - SQL Use the following (denormalized) database schema (and the attached tables) to write the queries. Publishers (custid‚ name‚ city‚ phone‚ creditcode) Bookjobs (jobid‚ custid‚ jobdate‚ descr‚ jobtype) POS (jobid‚ poid‚ podate‚ vendorid) Items (itemid‚ descr‚ onhand‚ price) Po_Items (jobid‚ poid‚ itemid‚ quantity) For each question‚ turn in the Oracle SQL query and the output. You should feel free to do these by hand (paper and pencil)‚ or you may actually run them
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Texas Culture When the three of us decided to use Texas as our micro-culture‚ I thought it was a great idea. I am not a Texan‚ since by definition to be a Texan‚ you must have been born in Texas‚ no exceptions (http://www.texas-best.com)‚ but do consider myself an honorary Texan. My first experience with Texas was around 1983 when I visited the state. I was traveling quite extensively at that time and most of Texas was included in those travels. I had previously been in several other states
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classical and empirical probabilities. a. Classical probabilities are based on assumptions; Empirical probabilities are based on observations. b. Classical probabilities do not require an action to take place; Empirical probabilities have to have been “performed”. 2) Gather 16 to 30 coins. Shake and empty bag of coins 10 times and tally up how many head and tails are showing. Number of coins: 20 * Consider the first toss‚ what is the observed probability of tossing a head? Of
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probability questions : 1. A real estate office has been averaging 1.8 sales per day for the past several months. What is the probability that the office will make 4 sales today? .0723 2. A washing machine in a Laundromat breaks down an average of two times per month. What is the probability that the machine will break down more than 28 times in the next year? .1775 3. Flaws occur randomly in a particular fabric with a mean rate of occurance of 1.5 every 5 sqare yards. If you purchase 20 square
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Introduction: The purpose of this lab is to apply Mendel’s laws to predict the probability of the occurrence of a single event‚ of two independent events and of certain traits in offspring of parents exhibiting traits. Gregor Mendel was an Austrian monk in 1866‚ who studied how traits were passed using pea plants. From his studies of inheritance‚ he created three laws of inheritance: the law of dominance‚ the law of segregation‚ and the law of independent assortment. He called genes ‘’factors’’
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companies and the probability of getting a job offer there. These data are tabulated below. The tabulation is in the decreasing order of cost. 1. If the graduate applies to all 10 companies‚ what is the probability that she will get at least one offer? 2. If she can apply to only one company‚ base on cost and success probability criteria alone‚ should she apply to company 5? Why or why not? 3. If she applies to companies 2‚5‚8‚ and 9‚ what is the total cost? What is the probability that she will
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1 Why probability and statistics? Is everything on this planet determined by randomness? This question is open to philosophical debate. What is certain is that every day thousands and thousands of engineers‚ scientists‚ business persons‚ manufacturers‚ and others are using tools from probability and statistics. The theory and practice of probability and statistics were developed during the last century and are still actively being refined and extended. In this book we will introduce the basic notions
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Assignment 3: PROBABILITY PROJECT Probability Project Strayer University Math 104 Professor Stephen Vest December 16‚ 2012 In this writing assignment I will explain how I determined the odds of winning a Texas Hold’em game or not‚ where I have a six and seven of diamonds. My opponent has a ten of clubs and a ten of spades. At the turn or fourth street‚ the cards on the table are a three of diamonds‚ four of clubs‚ nine of spades‚ and a ten of diamonds. These cards show
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The Texas Sharpshooter Fallacy The fallacy “Texas Sharpshooter” gets its name from imagining a cowboy shooting at a barn. Over time‚ one side of the barn that the cowboy continuously shoots at‚ becomes shattered with holes. In some places‚ there are many holes‚ in other places‚ there are few to none. If the cowboy later paints a bulls eye over a spot where his bullet holes clustered together‚ it would look like he’s pretty good with the gun. “The Texas sharpshooter fallacy is an informal fallacy
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