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QNT 561 Entire Course

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QNT 561 Week 1 Individual Practice Problems (Chapter 2 and 4)

QNT 561 Week 1 DQ 1

QNT 561 Week 1 DQ 2

QNT 561 Week 2 Individual Practice Problems (Chapter 4 and 5)

QNT 561 Week 2 Team Assignment Business Research Methods, Part I

QNT 561 Week 2 DQ 1

QNT 561 Week 2 DQ 2

QNT 561 Week 3 Individual Practice Problems (Chapter 3)

QNT 561 Week 3 Individual Assignment A Decision of Uncertainty Paper

QNT 561 Week 3 Learning Team Reflection Paper

QNT 561 Week 3 DQ 1

QNT 561 Week 3 DQ 2

QNT 561 Week 4 Individual Practice Problems (Chapter 1)

QNT 561 Week 4 Learning Team Assignment Business Research Methods, Part II

QNT 561 Week 4 DQ 1

QNT 561 Week 4 DQ 2

QNT 561 Week 5 Individual Practice Problems (Chapter 6,7 and 9)

QNT 561 Week 5 Learning Team Reflection Paper

QNT 561 Week 5 DQ 1

QNT 561 Week 5 DQ 2

QNT 561 Week 6 Individual Practice Problems (Chapter 10 and 11)

QNT 561 Week 6 Team Assignment Business Research Methods, Part III

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QNT 561 Final Exam Guide 1

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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

11. We wish to develop a confidence interval for the population mean. The population follows the normal distribution, the standard deviation of the population is 3, and we have a sample of 10 observations. We decide to use the 90 percent level of confidence.

.......................................................................................................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 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.

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QNT 561 Week 1 Individual My Statslab Problem Set

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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. 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?

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QNT 561 Week 2 Individual My Statslab Problem Set

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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 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.

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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.
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QNT 561 Week 3 Individual Mystatslab Problem Set

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1. 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.

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

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Revisethe research questions based on instructor feedback from the previous week.

Identifypopulation and samples for your research.

Describewho will be chosen and how they will be accessed.

Determinethe data collection process.

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

Determinehow the survey will be distributed and collected.

Formatyour plan consistent with APA guidelines.

Clickthe Assignment Files tab to submit your assignment.

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QNT 561 Week 4 Individual Mystatslab Problem Set

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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 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 6 Team Assignment Business Research Project Part 5 Research Report and Presentation (2 Sets)

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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