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# QNT 561 UOP Tutorial / Uoptutorial

QNT 561 ENTIRE COURSE

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QNT 561 Week 1 DQ 1
QNT 561 Week 1 DQ 2
QNT 561 Week 1 Individual (Chapter 2 and 4)
QNT 561 Week 2 DQ 1
QNT 561 Week 2 DQ 2
QNT 561 Week 2 Individual (Chapter 4 and 5)
QNT 561 Week 2 Team Assignment Business Part I
QNT 561 Week 3 DQ 1
QNT 561 Week 3 DQ 2
QNT 561 Week 3 Individual Assignment A Decision
QNT 561 Week 3 Individual Practice Problems (Chapter 3)
QNT 561 Week 3 Learning Team Reflection Paper
QNT 561 Week 4 DQ 1
QNT 561 Week 4 DQ 2
QNT 561 Week 4 Individual Practice Problems (Chapter 1)
QNT 561 Week 4 Learning Team Assignment Part II
QNT 561 Week 5 DQ 1
QNT 561 Week 5 DQ 2
QNT 561 Week 5 Individual Practice Problems
QNT 561 Week 5 Learning Team Reflection Paper
QNT 561 Week 6 Individual Practice Problems
QNT 561 Week 6 Team Assignment Business Part III

QNT 561 Week 6 Team Assignment Part III

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QNT 561 FINAL EXAM GUIDE (NEW)

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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 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.

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QNT 561 FINAL EXAM GUIDE 1

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1) Which of the following measures of central location is affected most by extreme values?
A. Mean
B. Median
C. Mode
D. Geometric mean

2) Which level of measurement is required for the median?
A. Nominal
B. Ordinal
C. Interval
D. Ratio

3) Which level of measurement is required for the mode?
A. Nominal
B. Ordinal
C. Interval
D. Ratio

4) In a set of observations, which measure of central tendency reports the value that occurs most often?
A. Mean
B. Median
C. Mode
D. Geometric mean
5) The weighted mean is a special case of what?
A. Mean
B. Median
C. Mode
D. Geometric mean

6) A sample of 5 companies were examined for changes in their relative market share. The results showed the following increases and

decreases: –5, 10, 10, 5, –10.
A. 8
B. 2
C. -2
D. 6

7) The difference between the sample mean and the population mean is called the
A. margin of error
B. population standard deviation
C. standard error of the mean
D. sampling error

8) A local trade union consists of plumbers and electricians. Classified according to rank:
Apprentice Journeyman Master Total
Plumbers 25 20 30 75
Electricians 15 40 20 75
40 60 50
A member of the union is selected at random. Given that the person selected is an electrician, what is the probability that the person is a

master?
A. .053
B. .133
C. .500
D. .267

9) Suppose a population consisted of 20 items. How many different samples of n = 3 are possible?
A. 6840
B. 1140

C. 20

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QNT 561 FINAL EXAM GUIDE 2

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1. A difference between calculating the sample mean and the population mean is

2. Which of the following measures of central location is affected most by extreme values?

3. Which level of measurement is required for the median?

4. In which of the following distributions is the probability of a success usually small?

5. Which of the following is not a requirement of a probability distribution?

6. Which of the following is not a requirement of a binomial distribution?

7. A sample

8. The difference between the sample mean and the population mean is called the

9. Suppose a population consisted of 20 items. How many different sample of n = 3 are possible?

10. A point estimate is

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QNT 561 FINAL EXAM GUIDE SET(1 & 2)

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1. A difference between calculating the sample mean and the population mean is

2. Which of the following measures of central location is affected most by extreme values?

3. Which level of measurement is required for the median?

4. In which of the following distributions is the probability of a success usually small?

5. Which of the following is not a requirement of a probability distribution?

6. Which of the following is not a requirement of a binomial distribution?

7. A sample

8. The difference between the sample mean and the population mean is called the

9. Suppose a population consisted of 20 items. How many different sample of n = 3 are possible?

10. A point estimate is

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QNT 561 WEEK 1 INDIVIDUAL MY STATSLAB PROBLEM SET

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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.

8. Define statistical thinking.

9. Suppose you’re given a data set that classifies each sample unit into one of four categories: A, B, C or D. You plan to create a computer database consisting of these data, and you decide to code the data as A = 1, B = 2, C = 3 and D = 4. Are the data consisting of the classifications A, B, C and D qualitative or quantitative? After the data are in out as 1, 2, 3, or 4, are they qualitative or quantitative?

10. Identify each of the following variables as qualitative or quantitative.

11. Each month interviewers 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. Compare parts a through c.

12. Complete the table to the right?

13. In one university, language professors incorporated a 10-week extensive program to improve students’ Japanese reading comprehension. The professors collected 283 books originally 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 (color-coded for easy selection) according to length and complexity. Complete parts a through c.

14. A group of marketing professors asked every fourth adult entrant to a mall to participate in a study. A total of 119 shoppers agreed to answer the question, “Made locally” means what percentage of local labor and materials?” The responses of the 119 shoppers are summarized in the table to the right. Complete parts a through c below.

15. Graph the relative frequency histogram for the 300 measurements summarized in the relative frequency table to the right.

16. If jobs arrive at a particular work center at a faster rate than they depart, the work center impedes the overall production process and is referred to as a bottleneck. The data in the table were collected by an operations manager for use in investigating a potential bottleneck work center.

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QNT 561 WEEK 2 INDIVIDUAL MY STATSLAB PROBLEM SET

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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.

4. The random sample shown below was selected from a normal distribution.

4, 10, 7,….2. Complete parts a and b.

5. Periodically, a town water department tests the drinking water of homeowners such as lead. The lead levels in water specimens collected for a sample of 10 residents of the town had a mean of 3.1 mg/L and a standard deviation of 1.2 mg/L. Complete parts a through c.

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QNT 561 WEEK 2 TEAM ASSIGNMENT BUSINESS RESEARCH PROJECT PART 1 BUSINESS PROBLEM AND RESEARCH QUESTIONS

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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.

Develop a purpose statement for your research project.

Create a draft of the research questions addressing the problem and purpose statements.

Format your paper consistent with APA guidelines.

Click the Assignment Files tab to submit your assignment.

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QNT 561 WEEK 2 TEAM ASSIGNMENT BUSINESS RESEARCH PROJECT PART 1 FORMULATION OF THE RESEARCH PROBLEM

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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. 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 research question simple, easy to understand and able to be quantified with research data.

• Use the Research Question Two Variable Handout for guidance.

Create hypothesis statements based on the research question.

Format your paper consistent with APA guidelines.

Click the Assignment Files tab to submit your assignment.

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QNT 561 WEEK 3 INDIVIDUAL MYSTATSLAB PROBLEM SET

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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.

4. A random sample of 100 observations from a population with standard deviation 58 yielded a sample mean of 111. Complete parts a through c.

5. A final scores of games of a certain sport were compared against the final point spreads established by oddsmakers. The difference between the game outcome and point spread (called a point-spread error) was calculated for 250 games. The mean and standard deviation of the point-spread errors are = 1.7 and s = 13.1. Use this information to test the hypothesis that the true mean point-spread error for all games differs from 0. Conduct the test at α = 0.10 and interpret the result.

6. If a hypothesis test were conducted using α = 0.025, for which of the following p-values would the null hypothesis be rejected?

7. For the α and observed significance level (p-value) pair, indicate whether the null hypothesis would be rejected.

α = 0.10, p-value = 0.001

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QNT 561 WEEK 3 TEAM ASSIGNMENT BUSINESS RESEARCH PROJECT PART 2 RESEARCH PLAN (2 PAPERS)

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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.

Describe the format of the survey and the basic item content to be gathered.

Determine how the survey will be distributed and collected.

Format your plan consistent with APA guidelines.

Click the Assignment Files tab to submit your assignment.

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QNT 561 WEEK 4 INDIVIDUAL MYSTATSLAB PROBLEM SET

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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 unethical for a downsizing decision to be implemented on or prior to a major holiday.” Responses were measured using a 5-point Likert scale, where 1 = strongly agree, 2 = agree, 3 = neutral, 4 = disagree, and 5 = strongly disagree. Data on both the qualitative variable “Group” and the quantitaive variable “Ethics response” are shown in the accompanying table. The researchers’ goal was to determine if any differences exist among the mean ethics scores for the four groups. Complete parts a through d.

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QNT 561 WEEK 4 TEAM ASSIGNMENT BUSINESS RESEARCH PROJECT PART 3 SURVEY AND DATA COLLECTION PLAN (2 SETS)

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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.

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QNT 561 WEEK 5 INDIVIDUAL MYSTATSLAB PROBLEM SET

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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.

5. Construct a scttergram for each data set. Then calculate r and r2 for each data set. Interpret their values. Complete parts a through d.

6. 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 variables measured were self-knowledge skill level (x) and goalsetting ability (y). The correlation was r = 0.82. Complete parts a through c below.

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QNT 561 WEEK 5 TEAM ASSIGNMENT BUSINESS RESEARCH PROJECT PART 4 DATA ANALYSIS (2 SETS)

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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.

Think of this as a progress report to the CEO. He/She has provided your resources to conduct your research and you have just completed the deployment of your survey with some raw data BUT your analysis is not completed! This is to provide the CEO a quick touch point informing them how everything went, what are your initial thoughts, showing them your raw results (# counts and percentages) for each question, and anything that is jumping out at you at this point.

You will provide your detailed analysis in Week 6.

Click the Assignment Files tab to submit your assignment.

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QNT 561 WEEK 6 TEAM ASSIGNMENT BUSINESS RESEARCH PROJECT PART 5 RESEARCH REPORT AND PRESENTATION (2 SETS)

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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 interpretation for the tables or figures
• Summary of Learning Team results
• Answers to the research questions
• Research challenges
• Steps to minimize challenges in future research
• Rationale for the survey items

Analyze the implications of the team's results in relation to the business. There should be at least one graduate level statistical equation used to support your analysis.

Recommend avenues for future research based on your research results, challenges, and implications.