1. How many automobile brands have centers between 20 and 29 in these three cities? 2. How many automobile brands have more than 40 centers in these cities?
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- Daniel Glaser, chairman of the College of San Antonio’sbusiness department, needs to assign professors to courses nextsemester. As a criterion for judging who should teach each course,Professor Glaser reviews the past 2 years’ teaching evaluations (which were filled out by students). Since each of the four profes-sors taught each of the four courses at one time or another during the 2-year period, Glaser is able to record a course rating for eachinstructor. These ratings are shown in the following table.a) Find the assignment of professors to courses to maximize theoverall teaching rating.b) Assign the professors to the courses with the exception thatProfessor Fisher cannot teach statistics. PXPROFESSOR COURSE STATISTICS MANAGEMENT FINANCE ECONOMICSW. W. Fisher 90 65 95 40D. Golhar 70 60 80 75Z. Hug 85 40 80 60N. K. Rustagi 55 80 65 55A music professor offers his 40 students the option of coming to an additional rehearsal session theweek before their juries (musical final exams.) In order to decide whether these extra sessions actuallyhelp students, he keeps track of who attends them and compares their jury scores to those of students who did not schedule extra sessions. In this study, a difference was found between the scores of students who scheduled the extra sessions and those of students who didn't attend(higher average for students with extra sessions) A) Yes, becuase the study relied on a common final exam fro everyone B)No, because the students chose whether they attended the review session or not C) Yes becuase the study included both students who attned the review session and those who did not D)Yes, becuase the number of subjects in the study was large E)No, becuase the students in the study were not blindedClairLinx Wireless, a start-up cell phone company, has divided its market of potential customers into three major groups: single, working; married, working; and retired. ClairLinx surveyed 500 potential customers and asked each, "Of the following, which do you consider to be the most important feature in a cell phone service plan: free nights and weekends, free long distance and roaming, or free calls to customers with the same company?" Each of the 500 potential customers in the survey was categorized according to the service plan feature she considers most important and the customer group in which she appears. The data are summarized in the contingency table below. In the cells of the table are the respective observed frequencies, and three of the cells also have blanks. Fill in these blanks with the frequencies expected if the two variables, type of potential customer and choice of service plan feature, are independent. Round the responses to at least two decimal places. Note:…
- There are 10 males and 18 females in the Data Management class. How many different committees of 5 students can be formed if there must be at least 2 males?Researchers constructed two test sheets, each sheet including 20 photos of the faces of dog–owner pairs taken at a dog lovers' field festival. The 20 sets of dog–owner pairs on the two sheets were equivalent with respect to breed, diversity of appearance, and gender of owners. On the first sheet, the dogs were matched with their owners, while on the second sheet, the dogs and owners were deliberately mismatched. Three experiments were conducted, and in all experiments, subjects were asked to "choose the set of dog–owner pairs that resemble each other, Sheet 1 or Sheet 2," and were simply told the aim of the research was a "survey on dog–owner relationships." In the first experiment, the original sheets were shown to subjects; in the second experiment, just the "mouth region" of the owners was blacked out in all the pictures on both sheets; in the third experiment, just the "eye region" of the owners was blacked out. Subjects were assigned at random to the three experimental groups, and…Researchers constructed two test sheets, each sheet including 20 photos of the faces of dog–owner pairs taken at a dog lovers' field festival. The 20 sets of dog–owner pairs on the two sheets were equivalent with respect to breed, diversity of appearance, and gender of owners. On the first sheet, the dogs were matched with their owners, while on the second sheet, the dogs and owners were deliberately mismatched. Three experiments were conducted, and in all experiments, subjects were asked to "choose the set of dog–owner pairs that resemble each other, Sheet 1 or Sheet 2," and were simply told the aim of the research was a "survey on dog–owner relationships." In the first experiment, the original sheets were shown to subjects; in the second experiment, just the "mouth region" of the owners was blacked out in all the pictures on both sheets; in the third experiment, just the "eye region" of the owners was blacked out. Subjects were assigned at random to the three experimental groups, and…
- The television show CSI: Shoboygan has been successful for many years. That show recently had a share of 19, which means, that among the TV sets in use, 19% were tuned to CSI: Shoboygan. An advertiser wants to verify that 19% share value by conducting its own survey, and a pilot survey begins with 12 households have TV sets in use at the time of a CSI: Shoboygan broadcast.A survey was conducted of two types of marketers. The first type being marketers that focus primarily on attracting business (B2B), and the second type being marketers that primarily target consumers (B2C). It was reported that 518 (88%) of B2B and 246(59%) of B2C marketers commonly use a business social media tool. The study also revealed that 301(51%) of B2B marketers and 248(59%) of B2C marketers commonly use a video social media tool. Suppose the survey was based on 590 B2B marketers and 420 B2C marketers. Complete parts (a) through (c) below. At the 0.05 level of significance, is there evidence of a difference between B2B marketers and B2C marketers in the proportion that commonly use the business social media tool? Let population 1 correspond to B2B marketers and population 2 correspond to B2C marketers. Choose the correct null and alternative hypotheses below. A.H0:π1=π2 H1: π1≠π2 BH0:π1≥π2 H1:π1<π2 C.H0:π1≤π2 H1:π1>π2…Suppose a veterinarian wants to estimate the difference between the proportion of cat owners who are single and the proportion of dog owners who are single. Of the pet owners that visit any of the veterinarian clinics in her city regularly, she identifies 3872 pet owners that exclusively have cats and 4108 pet owners that exclusively have dogs. From this list of pet owners, she surveys 158 randomly selected cat owners and 139 randomly selected dog owners and asks each of them if they are single or married. Her findings are summarized in the table. Population Populationdescription Samplesize Number of successes Sampleproportion 1 cat owners ?1=158 ?1=63 ?̂1=0.39873 2 dog owners ?2=139 ?2=52 ?̂2=0.37410 Calculate the upper and lower limits (bounds) for a large sample 90% ?‑confidence interval for the difference in two population proportions, ?1−?2. Give each of your answers with three decimal places of precision.
- An advertising firm wanting to target people with strong desires for success conducted astudy to see if such people differed in the types of television shows they watched. Randomlyselected participants recorded the shows they watched for a week, then their desire for successwas assessed, and finally they were divided into two groups. Low Success seekers watched 8comedies, 15 romances, 6 documentaries, 13 dramas, and 3 news shows. High Success seekerswatched 3 comedies, 3 romances, 9 documentaries, 7 dramas, and 8 news shows. Using thisdata answer the following: State the populations and hypotheses Create a table for the data using SPSS Conduct a Chi-Squared for independence test using the SPSS program and post outputfile. State the results using the proper APA format. Is the distribution of type of shows watched different for participants having high andlow desires for success?wat is the intermdiate demond of the agricultural,manufacutring,and energy sectorIn the City of Manila, the total population is 1,750,873 and there are six districts within the area. Compute for its average, and the number of people in the clustered group(desire = 90).