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Profiling UK rental malls. An analysis of the retail rental levels of tenants of United Kingdom regional shopping malls was published in Urban Studies (June 2011 ). One aspect of the study involved describing the type of tenant typically found at a UK shopping mall. Data were collected for 148 Shopping malls, which housed 1,821 stores. Tenants were categorized into five different-size groups based on amount of floor space: anchor tenants (more than 30,000 square feet), major space users (between 10,000 and 30,000 sq. ft.), large standard tenants (between 4,000 and 10,000 sq. ft. ), small standard tenants (between 1,500 and 4,000 sq. ft.), and small tenants (less than 1,500 sq. ft.). The number of stores in each tenant category was reported as 14, 61, 216, 711, and 819, respectively. Use this information to construct a Pareto diagram for the distribution of tenant groups at UK shopping malls. Interpret the graph.
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Statistics for Business and Economics (13th Edition)
- Urban Travel Times Population of cities and driving times are related, as shown in the accompanying table, which shows the 1960 population N, in thousands, for several cities, together with the average time T, in minutes, sent by residents driving to work. City Population N Driving time T Los Angeles 6489 16.8 Pittsburgh 1804 12.6 Washington 1808 14.3 Hutchinson 38 6.1 Nashville 347 10.8 Tallahassee 48 7.3 An analysis of these data, along with data from 17 other cities in the United States and Canada, led to a power model of average driving time as a function of population. a Construct a power model of driving time in minutes as a function of population measured in thousands b Is average driving time in Pittsburgh more or less than would be expected from its population? c If you wish to move to a smaller city to reduce your average driving time to work by 25, how much smaller should the city be?arrow_forwardThe Behavioral Risk Factor Surveillance System (BRFSS) is an annual telephone survey designed to identify risk factors in the adult population and report emerging health trends. The following table displays the distribution of health status of respondents to this survey (excellent, very good, good, fair, poor) and whether or not they have health insurance. Excellent Very good Good Fair Poor Total No health coverage 459 727 854 385 99 2524 Health coverage 4198 6245 4821 1634 578 17476 Total 4657 6972 5675 2019 667 20000 (a) Why is being in excellent health and having health coverage not mutally exclusive? Please leave a detailed answer and how you found out. (b) If we draw one individual at random, what is the probability that the respondent has excellent health or doesn't have health coverage? Please leave a detailed answer on how you found that answer. (c) What is the probability that a randomly chosen individual has excellent health given that he has health…arrow_forwardIs the crime rate in New York different from the crime rate in New Jersey? Independent random samples from region A (cities in New York) and region B (cities in New Jersey) gave the following information about violent crime rate (number of violent crimes per 100,000 population). (Reference: U.S. Department of Justice, Federal Bureau of Investigation.) Region A 436 408 539 489 439 600 402 595 422 434 486 Region B 438 435 428 556 534 470 616 401 478 430 379 415 Use a 10% level of significance to test the claim that there is no difference in the crime rate distributions of the two states. (a) What is the level of significance?State the null and alternate hypotheses. Ho: Distributions are different. H1: Distributions are the same.Ho: Distributions are the same. H1: Distributions are different. Ho: Distributions are the same. H1: Distributions are the same.Ho: Distributions are different. H1: Distributions are different. (b) Compute the sample test statistic. (Use 2 decimal…arrow_forward
- In a study conducted by the Department of Environmental Sciences at Virginia Tech, the steel rods supplied by two different companies were compared. Ten sample springs were made out of the steel rods supplied by each company and a measure of flexibility was recorded for each. The data are as follows: Company-A: 6.1 8.2 7.1 7.5 8.1 6.0 8.0 6.5 7.2 7.0 Company-B: 12 9.5 9.9 10.2 10.2 9.7 11.0 11.1 10.2 9.6 a. Calculate the standard deviation for the data of the two companies. b. Which company is better?arrow_forwardThe National Assessment for Educational Progress (NAEP) is a U.S. government organization that assesses the performance of students and schools at all levels across the United States. The following table presents the percentage of eighth-grade students who were found to be proficient in mathematics and the percentage who were found to be proficient in reading in each of the ten most populous states. Use excels to find: State Percentage Proficient in Reading Percentage Proficient in Mathematics California 60 59 Texas 73 78 New York 75 70 Florida 66 68 Illinois 75 70 Pennsylvania 79 77 Ohio 79 76 Michigan 73 66 Georgia 67 64 North Carolina 71 73 Activities: Construct a scatterplot with reading proficiency on the horizontal axis and math proficiency on the vertical axis. Is there a linear relationship? Compute the correlation between reading proficiency and math proficiency. Is the linear…arrow_forwardIs the crime rate in New York different from the crime rate in New Jersey? Independent random samples from region A (cities in New York) and region B (cities in New Jersey) gave the following information about violent crime rate (number of violent crimes per 100,000 population). (Reference: U.S. Department of Justice, Federal Bureau of Investigation.) Region A 408 457 423 557 409 579 483 417 425 421 606 Region B 391 465 389 479 390 482 434 620 400 442 433 405 Use a 5% level of significance to test the claim that there is no difference in the crime rate distributions of the two states. (a) What is the level of significance? (b) Compute the sample test statistic. (Use 2 decimal places.) (c) Find the P-value of the sample test statistic. (Use 4 decimal places.)arrow_forward
- An automotive engineer is investigating two different types of metering devices for an electronic fuel injection system to determine whether they differ in their fuel mileage performance. The system is installed on 10 different cars, and a test is run with each metering device on each car. The data is provided below: Metering Device Car 1 2 1 17.6 16.8 2 19.4 20.0 3 18.2 17.6 4 17.1 16.4 5 15.3 16.0 6 15.9 15.9 7 16.3 16.5 8 18.0 18.4 9 17.3 16.4 10 19.1 20.1 Is there a significant difference between the means of the two metering devices? Use . Interpret the result in the context of the problem. An article in the journal Hazardous Waste and Hazardous Materials (Vol. 6, 1989) reported the results of an analysis of the weight of calcium in standard cement and cement doped with lead. Reduced levels of calcium would indicate that the hydration mechanism in the cement is blocked…arrow_forwardConsider the following two hypothetical case-control studies, each studying the relationship between eating bacon and stomach cancer stratified by nationality. Complete question after presentation of studies. STUDY 1 JAPANESE AMERICAN Stomach Cancer No Cancer Stomach Cancer No Cancer Eats Bacon 200 100 300 Eats Bacon 115 265 380 No Bacon 100 200 300 No Bacon 20 200 220 300 300 600 135 465 600 STUDY 2 JAPANESE AMERICAN Stomach Cancer No Cancer Stomach Cancer No Cancer Eats Bacon 200 100 300 Eats Bacon 115 265 380 No Bacon 100 200 300 No Bacon 53 530 583 300 300 600 168 795 963 Fill in the strata-specific (strata by nationality), and crude OR’s for both studies. You must show your work.arrow_forwardIn 2015, Addison Group and Kelton surveyed the work preferences and attitudes of 1047 working adults spread over three generations — Baby Boomers, Generation X, and Millennials (Society for Human Resource Management website). One question asked individuals if they would leave their current job to make more money at another job. The file Millennials contains the sample data, which is also summarized in the following table. Generation Leave Job for More Money? Baby Boomer Generation X Millennial Yes 135 165 172 No 205 192 178 Conduct a test of independence to determine whether interest in leaving a current job for more money is independent of employee generation. Compute the value of the test statistic (to decimals). Do not round your intermediate calculation.arrow_forward
- In a study of the effect of mood on the evaluation of nutritious food, 208 subjects were randomly assigned to read either a happy story ( to induce positive mood) or a control (no story, neutral mood) group. Subjects were then asked to evaluate their attitude toward a certain indulgent food on a nine-point scale, with higher numbers indicating a more positive attitude toward the food. The following table summarizes the data: Group n x bar s Positive mood 104 4.25 2.15 Neutral mood 104 5.25 1.75 Test the hypotheses of no difference between two groups using a two-sample t-test. Calculate the degrees of freedom? Calculate test statistic?arrow_forwardThe article ``Work-Related Attitudes" (Psychological Reports, 1991:443-450) reports the results of a survey of 395 elementary school teachers and 266 high school teachers. Of the elementary school teachers, 224 said they were very satisfied with their jobs, whereas 126 of the high school high school teachers were very satisfied with their jobs. Consider the elementary school teachers and the high school teachers that were interviewed as two independent groups. Test the claim that the proportion of elementary teachers who are satisfied (p1) is LARGER THAN the proportion of high school teachers who are satisfied (p2), using α=0.05.arrow_forwardDo single-parent families tend to be more impoverished than families with two parents? In order to test if there is a relationship between family structure and family income level, family researcher studied a sample of 35 one-parent and 65 two-parent families in a particular city to determine whether their total family income fell below the poverty level. _________________________Family Structure____________________________ Total family Income One Parent Two Parents TOTAL Below poverty level 24 20 44 Not Below Poverty Level 11 45 56 Total 35 65 100 What are the independent and dependent variables.? What is the null hypothesis? What test should we use?…arrow_forward
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillFunctions and Change: A Modeling Approach to Coll...AlgebraISBN:9781337111348Author:Bruce Crauder, Benny Evans, Alan NoellPublisher:Cengage Learning