Modelling 2 Week 3: Discrete Random Variables Stephen Bush Department of Mathematical Sciences MM2: Statistics - Week 3 - 1 Random Variables • Reference: Devore § 3.1 – 3.5 • Definitions: • An experiment is any process of obtaining one outcome where the outcome is uncertain. • A random variable is a numerical variable whose value can change from one replicate of the experiment to another. • Sample means and sample standard deviations are random variables • They are different
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Movie Review The Hurt Locker The Hurt Locker is a film directed by Kathryn Bigelow‚ set in the Iraq war. The film is about three men who makeup an explosives ordinance team; Staff Sargent Matthew Thompson (Guy Pearce)‚ Sergeant J.T. Sanborn (Anthony Mackie)‚ and Specialist Owen Eldridge (Brian Geraghty). In the beginning‚ a bomb disposal goes bad and Sargent Matthew Thompson is killed by the blast‚ Eldridge blames himself for his friend’s death because he had the chance to shoot the bomber‚
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Foot Locker‚ Inc. Samragyee Gyawali‚ Moe Ichinogo‚ Yilin Lu‚ Rebecca Schwartz Strategic Management Section 03 Table of Contents Executive Summary ………………………………………………………………………… 3 Letter of Transmittal ………………………………………………………………………… 5 Company History ………………………………………………………………………… 6 Industry Analysis ………………………………………………………………………… 6 Marketing Analysis ………………………………………………………………………… 11 Financial Analysis ………………………………………………………………………… 17 SWOT Analysis ………………………………………………………………………… 23
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Selected Answer: .5006 . Question 5 .5 out of 5 points An automotive center keeps tracks of customer complaints received each week. The probability distribution for complaints can be represented as a table or a graph‚ both shown below. The random variable xi represents the number of complaints‚ and p(xi) is the probability of receiving xi complaints. xi 0 1 2 3 4 5 6 p(xi) .15 .1 .28 .20 .10 .10 .07 What is the expected number of complaints received per week? Round
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should schools be allowed to conduct random drug tests on students? Many parents rub off on their kids. If the child’s parents do drugs in front of their kids then the kids will think that it’s cool to do drugs. Schools should be allowed to conduct random drug tests because peer pressure‚ prevent a better future for them‚ and cause a safer environment for the students. Schools should conduct random drug tests because kids get peer
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Class 55 Barracks and Wall Locker Standard Operating Procedure: 1) For inspections: Wall lockers will have the doors open at approximately 90 degrees unless inhibited by the furniture. The top drawers will be opened fully. The large bottom drawer is the designated personal draw and will remain closed for inspections. 2) Clothes Hangers will be the standard wire dry-cleaner style hanger. The wall lockers will not contain more than 20 hangers. Empty hangers‚ maximum of 5‚ will hang to the far left
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Random Acts of Kindness For our Random act of Kindness project we decided to surprise a teacher with flowers‚ candy‚ and pictures of her favorite animals. We chose Mrs. Adams because we all like her as a teacher and she was recently going through a hard time. I brought her some flowers‚ purchased some of favorite candy‚ and drew pictures of her favorite animals. During advisory we placed the gifts right by her door and knocked on her door. We then ran away and left the gifts as a surprise. Who
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Twitter Searches For A Business Model Case Study Questions: 1. Twitter began as a web-based version of popular text messaging services provided by cell phone carriers. Basically‚ Twitter doesn’t make money. However‚ if a company signs up to blast messages to users‚ they could earn a profit. In April 2010‚ Twitter announced its first foray into the big-time ad marketplace with promoted Tweets. This was thought of as Twitter search engine. In June 2010‚ they announced their newest addition which was
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I am contacting you in regards of the police dog searches being considered in the West Fargo Public School District. I support schools in our district being searched by police dogs and agree that it would benefit our students and staff. If police dog searches are implemented it would create a sense of security in the schools and keep students accountable for their actions. Police dog searches are beneficial to student’s and faculty’s safety on school property. This sense of security is very important
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There are many ways to select a random sample. Four of them are discussed below: Simple Random Sampling: In this sampling technique‚ each sample of the same size has the same probability of being selected. Such a sample is called a simple random sample. One way to select a simple random sample is by a lottery or drawing. For example‚ if we need to select 5 students from a class of 50‚ we write each of the 50 names on a separate piece of paper. Then‚ we place all 50 names in a hat and mix them thoroughly
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