QNT 561 Final Exam Guide (New)
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1. The mean gas mileage for a hybrid car is 56 miles per gallon. Suppose that the gasoline mileage is approximately normally distributed with a standard deviation of 3.2 miles per gallon.
2. What conditions must n satisfy to make the x^{2} test valid?
3. To use the tstatistic to test for a difference between the means of two populations, what assumptions must be made about the two populations? About the two samples?
4. Studies of managers from two countries in the 1970s found sharp differences of opinion toward quality management. To find out if these differences continue to exist, researchers surveyed 100 managers in each country in the electronics manufacturing industry. The accompanying table gives the percentages of managers from each country who agree with each of 10 randomly selected statements regarding quality. Complete parts a through c.
5. Consider the horizandal box plot shown to the right.
6. A random sample of 100 observations from a population with standard deviation 58 yielded a sample mean 111. Complete parts a through c.
7. Graph the relative frequency histogram for the 300 measurements summarized in the relative frequency table to the right.
8. Each month interviewrs visit about 69,000 of the 93 million households in the region and question the occupants over 18 years of age about their educational status. Their responses enable the interviewers to estimate the percentage of people in the labor force who are college educated. Complete parts a through c.
9. School bullying is a form of aggressive behaviour that occurs when a student repeatedly to nagative actions from another student. In oredr to study the effectiveness of an antibullying policy at elementary schools, a survey of over 2,000 elementary school children was conducted. Each student was asked if he or she ever bullied another student. In a sample of 1358 boys, 745 claimed they had never bullied another student. In a sample of 1379 girls, 966 claimed they had never bullied another student. Complete parts a through f below.
10. A study analyzes recent incidents involving terrorist attcks. Data on the number of individual suicide bombings that occurred in each of 20 sampled terrorist group attacks against a country is reproduced in the data table below. An EXCEL/DXL printout is shown to the right. Complete parts a through e.
11. Educators are constantly evaluating the efficacy of public schools in the education and training of students. One quantitative assessment of change over time is the difference in scores on the SAT. The table below contains the average SAT scores for the years 1988 and 2005.
12. Each child in a sample of 62 lowincome was administrated a language and communication exam. The sentence complexity scores had a mean of 7.63 and a standard deviation of 8.92. Complete parts a through d.
13. Suppose a consumer group rated 49 brands of toothpaste based on whether or not the brand carries an American Dental Association (ADA) seal verifying effective decay prevetion. The results of a hypothesis test for the proportion of brands with the seal are shown to the right. Complete parts a through c.
14. A university conducted a study on 446 business graduates who had all completed the same business course. The study used correlation coefficients to investigate the relationship between many different business skills. Two of the many variable measured were selfknowledge skill level (x) and goalsetting ability (y). The correlation coefficient was r = 0.82. Complete parts a through c below.
15. Reference from the doc file of mentioned r value
16. Five banks have been ranked by the amount charged to credit and debit cards issued by the banks. The table to the right gives the total amount charged in 2007 for the top ranked banks.
17. Which hypothesis, the null or the alternative, is the statusquo hypothesis?
18. A study was done to examine whether the perception of service quality at hotels differd by gender. Hotel guests were randomly selected to rate service items on a 5point scale. The sum of the items for each guest was determined and a summary of the guest scores are provided in the table. Complete parts a and b.
19. Identify the problem(s) in the residual plots shown below.
20. A university economist conducted a study of elementary school llunch menus. During the statemandated testing period, school lunches averaged 873 calories. The economist claimed that after the testing period ended, the average caloric content of the school lunches increased significantly. Set up the null and alternative hypothesis to test the economist’s claim.
21. Compare the zscores to decide which of the x values below lie the greatest distance above the mean and the greatest distance below the mean.
22. In one university, language professors incorporated a 10week extensive reading program to improve students’ Japanese reading comprehension. The professors collected 283 books written for Japanese children and required their students to read at least 40 of them as part of the grade in the course. The books were categorized into reading levels (colorcoded for easy selection) according to length and complexity. Complete parts a through c.
23. Researchers investigated the effect of tablet surface area to volume on the rate at which a drug is released in a controlledrelease dosage. For six similarly shaped tablets with different weights and thicknesses, the diffusional drug release rate (percentage of drug released divided by the square root of time) was determined. The experimental data are listed in the table. Complete parts a through d.
24. To determine if winning a certain award leads to a change in life expectancy, researchers sampled 748 award winners and matched each one with another person of the same sex who was in the same profession and was born in the same era. The lifespan of each pair was compared. Complete parts a through c below.
25. Many entrepreneurs have donated money to various causes. Data on the total amount pledged and remaining net worth for the 10 top donors are given in the table. Complete parts a through d.
26. When planning for a new forest road to be used for tree harvesting, planners must select the location to minimize tractor skidding distance. The skidding distances (in meters) were measured at 20 randomly selected road sites. The data are given below. A logger working on the road claims the mean skidding distance is atleast 413 meters. Is there sufficient evidence to refute this claim? Use α = 0.10.
27. Consider the pairs of measurements shown to the right.
28. For the α and observed significance level (pvalue) pair, indicate whether the null hypothesis would be rejected.
29. Researchers conducted a survey of a representative sample of over 1,000 drivers. Based on how often each driver engaged in road rage behaviour, a road score was given. The drivers were also grouped by annual income. The data were subjected to an analysis of variance, with the results summarized in the table.
There has been a recent trend for sports franchises in baseball, football, basketball and hockey to build new stadiums and ballparks in urban, downtown venues. A magazine investigated whether there has been a significant suburbantourban shift in the location of major sport facilities. In 1985 40% of all major sports facilities were located downtown, 30% in central city, and 30% in suburban areas. In contrast, of the 122 major sports franchises that existed in 1997, 65 were built downtown 28 in a central city, and 29 in a suburban area. Complete parts a through e.
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What are differences between dependent and independent samples? Provide examples. What are implications for determining the tests used to analyze data?
..

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What is the value of performing hypotheses tests to solve problems related to business and operations management? Provide specific examples.
..

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1. Consider the pairs of measurements shown to the right.
2. Researchers investigated the effect of tablet surface area to volume on the rate at which a drug is released in a controlledrelease dosage. For six similarly shaped tablet..

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What is the importance of pretesting questions and instruments? What are risks of not doing this? Provide an example.
..

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does technological advancement affect the ability to collect data? Provide examples. Does this advancement increase the chance for errors? Explain.
..

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1. Researchers conducted a survey of a representative sample of over 1,000 drivers. Based on how often each driver engaged in road behaviour, a road rage score was given. The drivers were also grouped by annual income. The data were subjected to an analysis of varian..

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You observe female sales representatives having lower customer defections than male sales representatives. What concepts and constructs would you use to study this phenomenon? How might the concepts or constructs relate to explanatory hypotheses? Explain.
..

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In your organization’s management development program, there was a heated discussion between people who claimed that theory is impractical and not effective, and others who claimed that effective theory is the most practical approach to problems. What position would you take and why?
..

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1. Which hypothesis, the null or the alternative, is the statusquo hypothesis?
2. A university economist conducted a study of elementary school lunch menus. During the statemandated testing period, school lunches averaged 890 calor..

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What is the purpose of sampling? What are some concerns and dangers of sampling? How important is the sample design to data validity? Explain. Provide an example where a sample might misrepresent data validity. For example, reflect on the current political campaign and the pollsters!
..

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What are some examples of operational definitions in research design within your profession? For example, in the education field, graduation rate and retention rate are important operational definitions to measure progress of students. Likewise other professions have common metrics and defin..

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1. A random sample of 87 observations produced a mean = 25.7 and a standard deviation s = 2.6.
2. Health care workers who use latex gloves with glove powder on a daily basis are particularly susceptible to developing a latex al..

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When would you use Chebyshev’s theorem and the empirical rule in business? How are they calculated? Provide one reallife example that requires Chebyshev’s theorem and one that requires the empirical rule.
..

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How may variance and standard deviation be applied to a realworld businessrelated problem? Provide a specific application in which these measures are useful.
..

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1. What is statistics?
2. Explain the difference between descriptive and inferential statistics.
3. Explain the difference between qualitative and quantitative data.
4. &nb..

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This Tutorial contains 2 Sets of Report and Presentation
Complete the cumulative Business Research Report in approx. 1,500 words by collaborating with your team to include the following:
Revised tables or figures based on prior instructor feedback
The description or interpretati..

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This Tutorial contains 2 different sets
Administer the survey.
In a paper in the APA format describe the following:
Determine the sample process including sample contact, survey distribution, and survey collection.
Organize, prepare, and describe the data.
Include tabl..

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Create a Microsoft® Excel® spreadsheet with the two variables from a dataset for your choosing.
Analyze the data with MegaStat®, StatCrunch®, Microsoft® Excel®or other statistical tool(s), including:
(a) Descriptive stats for each numeric variable
and
(b) Histogram for e..

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This Tutorial contains 2 different sets
Create a draft of the survey.
Conduct a pilot pretest having another Learning Team in the class to provide feedback for your team. Chet will create a message thread for each team to place their survey in the Class Discussion Tab.&nb..

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This Tutorial contains 2 different Papers
Develop a plan for your Business Research Project in approx. 800 words.
Revise the research questions based on instructor feedback from the previous week.
Identify population and samples for your research.
Describe w..

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Identify an organization or business for your Learning Team research project.
Describe the products or services it provides.
Identify a problem or dilemma faced by the organization that could be addressed by research.
Discuss the problem as a team..

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Identify an organization from any member in your Learning Team or an organization with which your team is familiar. If an actual company is used, disguise its name with a pseudonym.
Identify one independent variable and one dependent variable based on the business. Operation..

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1. The mean gas mileage for a hybrid car is 56 miles per gallon. Suppose that the gasoline mileage is approximately normally distributed with a standard deviation of 3.2 miles per gallon.
2. What conditions must n satisfy to make the..

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Chapter 13:
Ex 6) The owner of Maumee FordMercuryVolvo wants to study the relationship between the age of a car and its selling price. Listed below is a random sample of 12 used cars sold at the dealership during the last year.
a. If we wan..

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Chapter 10:
Ex 2) A Sample of 36 observations is selected from a normal population. The sample mean is 12, and the population standard deviation is 3. Conduct the following test of hypothesis using the 0.01 significance level.
EX. 10) Given the following hypotheses:
..

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Chapter 8:
Ex 2) The following is a list of 29 hospitals in the Cincinnati (Ohio) and Northern Kentucky region. The hospitals are identified by numbering them 00 through 28. Also included is whether the hospital is a general medical/surgical hospital (M/S) or a specialty hospital (..

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Chapter 5:
Ex 4) A large company must hire a new president. The Board of Directors prepares a list of five candidates, all of whom are equally qualified. Two of these candidates are members of a minority group. To avoid bias in the selection of the candidate, the company decides to..

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Chapter 2:
Ex 4) Two Thousand three hundred frequent business travelers are asked which Midwestern city they prefer: Indianapolis, Saint Louis, Chicago or Milwaukee. 388 liked Indianapolis best, 450 liked Saint Louis, 1212 liked Chicago and the remainder prefers Milwaukee. Develop ..

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1. A random sample of size 15 is selected from a normal population. The population standard deviation is unknown. Assume the null hypothesis indicates a twotailed test and the researcher decided to use the 0.10 significance level. For what values of t will the null hypothesis not be rejected?
..

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Chapter 18:
EX.2) Listed Below is the number of movie tickets sold at the Library CinemaComplex, in thousands, for the period from 2001 to 2013. Compute a fiveyear weighted moving average using weights of 0.15, 0.15, 0.25, 0.16, and 0.29, respectively. Describe the trend in yield..

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Purpose of Assignment
The purpose of this assignment to orient students to the key concepts in statistics. This assignment will introduce students to the language of statistics. Students will also get a chance to warmup on evaluating some basic descriptive statistics using Excel® prior to th..

QNT 561 Week 1 Assignment Statistics Concepts and Descriptive Measures Instructions (Financial Data)
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Purpose of Assignment
The purpose of this assignment to orient students to the key concepts in statistics. This assignment will introduce students to the language of statistics. Students will also get a chance to warmup on evaluating some basic descriptive statistics using Excel® prior to th..

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Individual Paper Signature Assignment
About Your Signature Assignment
This signature assignment is designed to align with specific program student learning outcome(s) in your program. Program Student Learning Outcomes are broad
statements that describe what students should know and be abl..

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Week 5
Learning team Paper
Part A : OneSample Hypothesis Testing Cases
Purpose of Assignment
The purpose of this assignment is to develop students' abilities to combine the knowledge of descriptive statistics covered in Weeks 1 and 2 and onesample hypothesis testing to mak..

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Week 5
Individual Paper
· Spicy Wings Case
Purpose of Assignment
The purpose of this assignment is to develop students' abilities to combine the knowledge of descriptive statistics covered in Weeks 1 and 2 and onesample hypoth..

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Individual Paper
Purpose of Assignment
The purpose of the assignment is to develop students' abilities in using datasets to apply the concepts of sampling distributions and confidence intervals to make management decisions.
Assignment Steps
Resources: Micros..

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Learning team paper
Purpose of Assignment
This assignment has two cases. The first case is on expansion strategy. Managers constantly have to make decisions under uncertainty. This assignment gives students an opportunity to use the mean and standard deviation of probability distribut..

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Individual Paper:
Purpose of Assignment
The purpose of this assignment is for students to learn how to make managerial decisions using a case study on Normal Distribution. This case uses concepts from Weeks 1 and 2. It provides students an opportunity to perfor..

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1. James Desreumaux, VP of Human Resources of American First Banks (AFB), is reviewing the employee training programs of AFB banks. His staff randomly selected personnel files for 100 tellers in the Southeast Region and determined that their mean training time ..
