1 / 32

# qnt 561 genius Focus Dreams/qnt561genius.com - PowerPoint PPT Presentation

FOR MORE CLASSES VISIT\nwww.qnt561genius.com\n\n\n1. 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.\n2. What conditions must n satisfy to make the x2 test valid?\n3. To use the t-statistic to test for a difference between the means of two populations, what assumptions must be made about the two populations? About the two samples?\n4. 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 \n

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about 'qnt 561 genius Focus Dreams/qnt561genius.com' - stephen6789

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

### qnt 561 genius Focus Dreams/qnt561genius.com

FOR MORE CLASSES VISIT

www.qnt561genius.com

FOR MORE CLASSES VISIT

www.qnt561genius.com

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 x2 test valid?

3.      To use the t-statistic 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

FOR MORE CLASSES VISIT

www.qnt561genius.com

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 two-tailed test and the researcher decided to use the 0.10 significance level. For what values of t will the null hypothesis not be rejected?

2. Which of the following is a characteristic of the F distribution?

3. For a chi-square test involving a contingency table, suppose the null hypothesis is rejected. We conclude that the two variables are __________

FOR MORE CLASSES VISIT

www.qnt561genius.com

How may variance and standard deviation be applied to a real-world business-related problem? Provide a specific application in which these measures are useful.

FOR MORE CLASSES VISIT

www.qnt561genius.com

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

QNT 561 Week 1 Individual My Statslab Problem Set

FOR MORE CLASSES VISIT

www.qnt561genius.com

1.      What is statistics?

2.      Explain the difference between descriptive and inferential statistics.

3.      Explain the difference between qualitative and quantitative data.

4.      Explain how populations and variables differ.

5.      Explain how populations and samples differ.

6.      What is a representative sample?

7.      Explain the difference between a population and a process.

FOR MORE CLASSES VISIT

www.qnt561genius.com

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 a frequency table and a relative frequency table to summarize this information (Round relative frequency to 3 decimal places.)

Ex 6) A small business consultant is investigating the performance of several companies. The fourth-quarter sales for last year (in thousands of dollars) for the selected companies were:

The consultant wants to include a chart in his report comparing the sales of six companies. Identify a bar chart that compares the fourth-quarter sales of these corporations.

FOR MORE CLASSES VISIT

www.qnt561genius.com

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 definitions. Identify some metrics and operational definitions from your own career or a profession that you know well. Tell us why you think it is important!

FOR MORE CLASSES VISIT

www.qnt561genius.com

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!

QNT 561 Week 2 Individual My Statslab Problem Set

FOR MORE CLASSES VISIT

www.qnt561genius.com

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 allergy. Each in a sample of 50 hospital employees who were diagnosed with a latex allergy based on a skin-prick test reported on their exposure to latex gloves. Summary statistics for thr number of latex gloves used per week are  = 19.4 and s = 11.6. Complete parts (a) – (d).

3.      Each child in a sample of 62 low-income children was administered 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.

FOR MORE CLASSES VISIT

www.qnt561genius.com

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 select the president by lottery. a. What is the probability one of the minority candidate is hired? b. Which concept of probability did you use to make this estimate? Ex 14) The chair of the board of directors says, “ There is a 50% chance this company will earn a profit, a 30% chance it will break even, and a 20% chance it will lose money next quarter”: a. Use an addition rule to find the probability the company will not lose money next quarter b. Use the complement rule to find the probability it will not lose money next quarter. EX 22 )

QNT 561 Week 2 Team Assignment Business Research Project Part 1 Business Problem and Research Questions

FOR MORE CLASSES VISIT

www.qnt561genius.com

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.

Discuss your selected problem or dilemma with your faculty member to ensure that it is at an appropriate scope for the course.

QNT 561 Week 2 Team Assignment Business Research Project Part 1 Formulation of the Research Problem

FOR MORE CLASSES VISIT

www.qnt561genius.com

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.  Operationalize these variables if they are too abstract to measure.Develop a real or realistic research question for the company you chose and the two variables. Include a background, a business problem and the team's role of no more than 500 words.

Develop a research question from the two variables. Keep you

QNT 561 Week 3 DQ 1 Part 1 Formulation of the Research Problem

FOR MORE CLASSES VISIT

www.qnt561genius.com

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?

QNT 561 Week 3 DQ 2 Part 1 Formulation of the Research Problem

FOR MORE CLASSES VISIT

www.qnt561genius.com

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.

QNT 561 Week 3 Individual Part 1 Formulation of the Research ProblemMystatslab Problem Set

FOR MORE CLASSES VISIT

www.qnt561genius.com

.      Which hypothesis, the null or the alternative, is the status-quo hypothesis?

2.      A university economist conducted a study of elementary school lunch menus. During the state-mandated testing period, school lunches averaged 890 calories. The economist claimed that after the testing period ended, the average caloric content of the school lunches increased/dropped significantly. Set up the null and alternative hypothesis to test the economist’s claim.

3.      Suppose the mean GPA of all students graduating from a particular university in 1975 was 2.40. The register plans to look at records of graduating last year to see if the mean GPA has decreased. Define notation and state the null and alternative hypothesis for this investigation.

QNT 561 Week 3 Lab Work (New) Part 1 Formulation of the Research Problem

FOR MORE CLASSES VISIT

www.qnt561genius.com

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 (S). we are interested in estimating the average number of full- and part-time nurses employed in the area hospitals.

Ex 8) A population consists of the following five values : 1,1,6,7,9.

a.       List all samples of size 3, and compute the mean of each sample

QNT 561 Week 3 Team Assignment Business Research Project Part 2 Research Plan (2 Papers)

FOR MORE CLASSES VISIT

www.qnt561genius.com

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 who will be chosen and how they will be accessed.

Determine the data collection process.

QNT 561 Week 4 Discussion Descriptive Statistics Part 2 Research Plan (2 Papers)

FOR MORE CLASSES VISIT

www.qnt561genius.com

Analyze聽the data with MegaStat庐, StatCrunch庐, Microsoft庐聽Excel庐or other statistical tool(s), including:

(a) Descriptive stats for each numeric variable

and

(b) Histogram for each numeric variable

and either (c) or (d)

(c) Bar chart for each attribute (non numeric) variable

QNT 561 Week 4 DQ 1 Part 2 Research Plan (2 Papers)

FOR MORE CLASSES VISIT

www.qnt561genius.com

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

QNT 561 Week 4 DQ 2 Part 2 Research Plan (2 Papers)

FOR MORE CLASSES VISIT

www.qnt561genius.com

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

QNT 561 Week 4 Individual Part 2 Research Plan (2 Papers)Mystatslab Problem Set

FOR MORE CLASSES VISIT

www.qnt561genius.com

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 variance, with the results summarized in the table.

2.      Researchers surveyed a random sample of 25 employees who were enrolled in a certain program at one of three universities. These individuals were divided into four distinct groups, 1, 2, 3, and 4, depending on their job situation at a previous or current firm. The sampled employees completed a questionnaire on their ethical perceptions of downsizing. One item asked employees to respond to the statement, “It is

QNT 561 Week 4 Lab Work (New) Part 2 Research Plan (2 Papers)

FOR MORE CLASSES VISIT

www.qnt561genius.com

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: H0 : µ = 400 H1: µ ≠ 400 A random sample of 12 observations is selected from a normal population. The sample mean was 407 and the sample S.D 6. Using the 0.1 significance level: a. State the decision rule. b. Compute the value of the test statistic c. What is your decision regarding the null hypothesis? EX 12) The management of White Industries considering a

QNT 561 Week 4 Team Assignment Business Research Project Part 3 Survey and Data Collection Plan (2 Sets)

FOR MORE CLASSES VISIT

www.qnt561genius.com

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.

Revise the survey based on the feedback provided by your classmates.Describe in a paragraph or two at the end of your survey what feedback was provided by the other team and how did that impact this final survey from you initial draft.

Click the Assignment Files tab to submit your final survey that you deploy.

QNT 561 Week 5 DQ 1 Part 3 Survey and Data Collection Plan (2 Sets)

FOR MORE CLASSES VISIT

www.qnt561genius.com

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

QNT 561 Week 5 DQ 2 Part 3 Survey and Data Collection Plan (2 Sets)

FOR MORE CLASSES VISIT

www.qnt561genius.com

What are differences between dependent and independent samples? Provide examples. What are implications for determining the tests used to analyze data?

QNT 561 Week 5 Individual Part 3 Survey and Data Collection Plan (2 Sets)Mystatslab Problem Set

FOR MORE CLASSES VISIT

www.qnt561genius.com

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 controlled-release 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.

3.      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.

4.      Explain what each of the following sample correlation coefficients tells you about the relationship between the x and y values in the sample.

QNT 561 Week 5 Lab Work (New) Part 3 Survey and Data Collection Plan (2 Sets)

FOR MORE CLASSES VISIT

www.qnt561genius.com

Chapter 13: Ex 6) The owner of Maumee Ford-Mercury-Volvo 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 wants to estimate selling price on the basis of the age of car, which variable is thr dependent varialble and which is the independent variable? b. 1. Determine the correlation coefficient 2. Determine the coefficient of determination. c. Interpret the correlation coefficient. Does it surprise you that the correlation coefficient is negative? EX.12) The student Government Association at Middle Carolina

QNT 561 Week 5 Team Assignment Business Research Project Part 4 Data Analysis (2 Sets)

FOR MORE CLASSES VISIT

www.qnt561genius.com

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 tables and figures as necessary to visually present the data.

QNT 561 Week 6 Lab Work (New) Part 4 Data Analysis (2 Sets)

FOR MORE CLASSES VISIT

www.qnt561genius.com

Chapter 18: EX.2) Listed Below is the number of movie tickets sold at the Library Cinema-Complex, in thousands, for the period from 2001 to 2013. Compute a five-year weighted moving average using weights of 0.15, 0.15, 0.25, 0.16, and 0.29, respectively. Describe the trend in yield. EX 10) Appliance Center sells a variety of electronic equipment and home appliance. For the last 4 years, 2010 through 2013, the following quarterly sales (in \$ millions) were reported. Determine the typical seasonal index for each of four quarters.

• QNT 561 Week 6 Team Assignment Business Research Project Part 5 Research Report and Presentation (2 Sets)

• FOR MORE CLASSES VISIT

• www.qnt561genius.com

• Complete聽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 interpretation for the tables or figures

• Summary of Learning Team results

• Answers to the research questions

• Research challenges

### qnt Part 5 Research Report and Presentation (2 Sets) 561 genius Focus Dreams/qnt561genius.com

FOR MORE CLASSES VISIT

www.qnt561genius.com