Chapters 1-3:In order to control costs‚ a company wishes to study the amount of money its sales force spends entertaining clients. The following is a random sample of six entertainment expenses (dinner costs for four people) from expense reports submitted by members of the sales force. $157‚ $132‚ $109‚ $145‚ $125‚ $139. Calculate the mean and sample variance(s^2) and standard deviation. Mean = 807/6 = 134.5. Sample Variance = (109925 – (807^2/6)/6-1 = (109925 – 108541)/5 = 1384/5 = 276.8.
Free Random variable Standard deviation Normal distribution
1. The three components of leadership are: 1.) influencing others‚ 2.) providing direction‚ and: ***getting voluntary acceptance 2. Comparing an organization’s strengths and weaknesses with its competitors is part of: PG 435 Not Self Assessment ***Competitor Analysis 3. Staff scheduling using information technology is only applicable to large organizations. ***False 4. When compared to public relations‚ marketing is: PG 430 Not Broader in scope 5. Which of the following types of
Premium Information technology Organization
Hypothesis: Ho: P = .10 (Mr. Plex and consortium will seriously consider settlement) H1: P < .10 (Mr. Plex and consortium will rigorously defend any lawsuit by Tommy) Analysis： For this case‚ we use 0.01 as the significance level. In a hypothesis test‚ a Type I Error occurs when the null hypothesis is rejected when it is in fact true. That means if the consortium decides to consider a settlement when greater than 10% of the patrons resented ads/commercials is true and we reject the null hypothesis
Premium Statistical hypothesis testing Type I and type II errors Statistics
Practice Problems 1-KEY 1. The closing stock price of Ahmadi‚ Inc. for a sample of 10 trading days is shown below. Day Stock Price 1 84 2 87 3 84 4 88 5 85 6 90 7 91 8 83 9 82 10 86 For the above sample‚ compute the following measures. a. b. c. The mean = ∑X/n = 860/10 = 86 The median = (85+86)/2 = 85.5 The variance = ∑ X - X 2/ n-1 = {(84-86)2 + (87-86)2 + (84-86)2 + (88-86)2 + (85-86)2 + (90-86)2 + (91-86)2 + (83The standard deviation = √8.89 = 2.98 The coefficient of variation = 2.98/86 * 100%
Premium Standard deviation Arithmetic mean Normal distribution
Personal Reflections Field study 1 enables us to experience the actual classroom scenario. We become open to the reality that students have differences and as a teacher we must bridge the gap so we would have an organize‚ peaceful and tranquil learning environment. The first activity which is “School as a Learning Environment”‚ makes us realize that physical environment greatly contributes to the learning of students. Sometimes failure of learning is not only because of teacher factor but because
Premium Education Learning
guard and prisoner. So the US Office of Naval Research funded money toward the experiment. Out of seventy-five male students only twenty-four were selected for the experiment. The twenty-four males were randomly assigned roles to either become a prisoner or prison guard. The experiment was set to happen in the basement of the Stanford psychology building. Professor Zimbardo‚ had high expectations for the experiment and the participants adapted to their roles well beyond what Zimbardo thought. The guards
Premium Stanford prison experiment
Sports & Exercise Psychology Chapter One Review May 21st‚ 2013 I. Summary: 1. Describe what sport and exercise psychology is. a. Sport and exercise psychology is the scientific study of the behavior of people engaged in sport and exercise activities and the application of the knowledge gained. Researchers in the field have two major objectives: a) to understand how psychological factors affect a person’s motor performance and b) to understand how participating in physical activity
Premium Science Psychology Scientific method
(P1.1) Lifespan Development Defined As the lifespan has been evaluated by many Developmental Psychologists‚ many different definitions and perspective have evolved. An accumulation of theories suggests that lifespan development can be identified as “a study of the miraculous changes a person goes through from birth until death. Lifespan development covers all stages of development and progress from the birth of a person to their death (Herron‚ 2010). Theories of Lifespan Development
Premium Developmental psychology Erikson's stages of psychosocial development Erik Erikson
there are approximately 126‚000 abortions conducted each day throughout the world. This website includes the abortion statistics of the world and breaks the data down to the demographics of the United States. It also discusses the decisions to have an abortion and the use of contraceptives in the United States. This was an informative website and included detailed statistics conducted by the Alan Guttmacher Institute. According to the website http://www.bls.gov/cps in 2000‚ gon average there
Premium Statistical hypothesis testing Unemployment Demographics
and the findings was able to get the pump disabled. He also noticed that all deaths occurred by the broad street pump which later was proven that there had been a cholera outbreak in that part of town. 3. One key way of gathering information in field epidemiology is conducting interviews. What information did John Snow gather through interviews‚ that he could not have obtained any other way? john snow went around to families of deceased persons to collect information on where they got their water
Premium Epidemiology Cholera