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QNT 275 Week 1 Individual Assignment Statistics in BusinessQNT 275 Week 1 DQ 1QNT 275 Week 1 DQ 2QNT 275 Week 1 DQ 3QNT 275 Week 2 Activity Data SetQNT 275 Week 2 Individual Assignment Business Decision Making Project, Part 1QNT 275 Week 2 DQ 1

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Qnt 275 study career path begins qnt275study com

QNT 275 STUDY Career Path Begins/qnt275study.com


Qnt 275 study career path begins qnt275study com1

QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Entire Course

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QNT 275 Week 1 Individual Assignment Statistics in Business

QNT 275 Week 1 DQ 1

QNT 275 Week 1 DQ 2

QNT 275 Week 1 DQ 3

QNT 275 Week 2 Activity Data Set

QNT 275 Week 2 Individual Assignment Business Decision Making Project, Part 1

QNT 275 Week 2 DQ 1

QNT 275 Week 2 DQ 2

QNT 275 Week 2 DQ 3


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Final Exam Guide

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QNT 275 Final Exam Guide

1. The salaries of teachers in a particular school district are normally distributed with a mean of $50,000 and a standard deviation of $2,500. Due to budget limitations, it has been decided that the teachers who are in the top 2.5% of the salaries would not get a raise. What is the salary level that divides the teachers into one group that gets a raise and one that doesn’t?

2. In the accompanying stem-and-leaf diagram, the values in the stem and leaf portions represent 10s and 1s digits, respectively.

The stem-and-leaf diagram shows that the distribution is ___________.

3. Which of the following is a quantitative variable?

4. Which of the following meets the requirements of a stratified random sample?


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Week 1 DQ 1

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What is the importance of statistics in business decision making? Describe a business situation where statistics was used in making a decision.


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Week 1 DQ 2

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Select four variables, other than what your fellow students have already selected, that could be measured by nominal, ordinal, interval, and ratio scale. Classify them by measurement scale and select descriptive statistics that can be used to summarize data. Use the following table when posting your response:

VariableLevel of Measurement

Descriptive Stat and Justify Selection

Nominal

Ordinal

Interval

Ratio


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QNT 275 Week 1 DQ 3

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How do we define measurement? What are various levels of measurement? How do you select measurement levels when developing a survey or data collection tool? Explain with examples.


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Week 1 Individual Assignment Statistics in Business (2 Papers)

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This Tutorial contains 2 Papers

Develop a 875-word response that addresses each of the following prompts:

§ Define statistics with citation and reference.

§ Contrast quantitative data and qualitative data. Use two Peer Reviewed references.

§ Evaluate tables and charts used to represent quantitative and qualitative data.

§ Describe the levels of data measurement.

§ Describe the role of statistics in business decision-making.


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Week 2 Assignment Mini-Project 3-2

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You are employed as a statistician for a company that makes household products, which are sold by part-time salespersons who work during their spare time. The company has four salespersons employed in a small town. Let us denote these salespersons by A, B, C, and D.

The sales records (in dollars) for the past 6 weeks for these four salespersons are shown in the table below.

Week A B C D

1 1774 2205 1330 1402

2 1808 1507 1295 1665

3 1890 2352 1502 1530

4 1932 1939 1104 1826

5 1855 2052 1189 1703

6 1726 1630 1441 1498


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Week 2 DQ 1

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Describe a business situation, other than what has already been selected by fellow students or selected from the team assignment, where mean and standard deviation can be used in decision making. Describe how calculation of mean and standard deviation can help in making a decision.


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Week 2 DQ 2

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What are the various methods one can use to identify the shape of data distribution collected for research study? Why it is important to know the shape of distribution? How it can be used in decision making? Provide examples other than those already posted in class.


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QNT 275 Week 2 DQ 3

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Select an article from a news magazine or research journal where data is displayed in a pie or bar chart. Describe the data displayed in the chart and what conclusion you could draw.


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QNT 275 Week 2 Individual Assignment Activity Data Set (Little Town Cafe)

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Review the following business scenario:

You are the manager in a small town in the lake district of a Midwestern state enjoys a robust tourist season during the summer months, but has only a small population of residents during the off season. The Littletown Café adjusts the levels of staff according to the time of year, to coincide with the number of guests, with the tourist season typically starting around Memorial Day each year. One wait staff employee can serve 50 guests. When a bus staff employee is added, the pair can serve 75 guests. At 76 guests, the café adds a second wait staff employee, for a total of 2 waiters and one busser. Analysis of guest numbers can support future decisions about scheduling wait staff, dishwashers, and bus staff for the café.


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QNT 275 Week 2 Quiz

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QNT 275 Week 2 Quiz

1. In order to summarize qualitative data, a useful tool is a __________.

2. A stem-and-leaf diagram is constructed by separating each value of a data set into two parts. What are these parts?

3. A recent survey of 200 small firms (annual revenue less than $10 million) asked whether an increase in the minimum wage would cause the firm to decrease capital spending. Possible responses to the survey question were: "Yes," "No," or "Don't Know." These data are best classified as ____________.

4. The accompanying chart shows the numbers of books written by each author in a collection of cookbooks. What type of chart is this?


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Week 3 CLO Business Decision Making Project Part 1

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CLO Business Decision-Making Project Part 1

Identify a business problem or opportunity at a company where you work or with which you're familiar. This will be a business problem that you use for the individual assignments in Weeks 3-5. It should be a problem/opportunity for which gathering and analyzing some type of data would help you understand the problem/opportunity better.

Identify a research variable within the problem/opportunity that could be measured with some type of data collection.

Consider methods for collecting a suitable sample of either qualitative or quantitative data for the variable.

Consider how you will know if the data collection method would be valid and reliable.


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Week 3 DQ 1

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An oil change shop advertised to change oil within 15 minutes. Based on the data collected on a typical day, what is the probability that oil change will take 15 minutes or less time? Based on the data, do you think the business claim is valid? Explain why or why not.

Class Interval

Frequency

6 to 10 minutes3

11 to 15 minutes8

16 to 20 minutes6

21 to 25 minutes2

More than 25 Minutes1


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QNT 275 Week 3 DQ 2

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What are some conditions under which business decisions are made using subjective probability concepts? Provide at least two examples of subjective probability.


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Week 3 DQ 3

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What are the characteristics of standard normal distribution? The HR department of an organization collects data on employees' age, salary, level of education, gender, and ethnicity. Which data do you think is more likely to follow normal distribution? Explain why.


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Week 3 Probability Case Study 5.2

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Week 3 Learning Team Collaboration Discussion: Probability

Resource: Case Study 5.2 in Chapter 5 of Essentials of Business Statistics

Calculate the requested probabilities for items 1-3.

Discuss your findings for the probabilities.

What was the smoking trend from 1997-2007?

Is this a discrete, continuous, or conditional probability? Why?


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Week 3 Quiz

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QNT 275 Week 3 Quiz

Question 1: • You work in marketing for a company that produces work boots. Quality control has sent you a memo detailing the length of time before the boots wear out under heavy use. They find that the boots wear out in an average of 208 days, but the exact amount of time varies, following a normal distribution with a standard deviation of 14 days. For an upcoming ad campaign, you need to know the percent of the pairs that last longer than six months-that is, 180 days. Use the empirical rule to approximate this percent.

Question 2: For any normally distributed random variable with mean μ and standard deviation σ, the percent of the observations that fall between μ-2σ and μ+2σ is closest to _______.


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Week 4 CLO Business Decision Making Project Part 2

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CLO Business Decision Making Project, Part 2

Use the same business problem/opportunity and research variable you wrote about in Week 3.

Remember: do not actually collect any data; think hypothetically.

Develop a 1,050-word report in which you:

· Identify the types of descriptive statistics that might be best for summarizing the data, if you were to collect a sample.

· Analyze the types of inferential statistics that might be best for analyzing the data, if you were to collect a sample.


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Week 4 DQ 1

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What is the difference between an independent and a dependent variable? Does a regression model imply causation? Explain why or why not


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Week 4 DQ 2

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Does correlation equal causation? Does the strength of correlation depend on the direction? What is the meaning of a zero correlation? Explain your answers.


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QNT 275 Week 4 DQ 3

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What are the requirements that must be met for a regression analysis? What happens if these requirements are violated? Why is analysis of residuals important?


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QNT 275 STUDY Career Path Begins/qnt275study.com

QNT 275 Week 4 Linear Regression Case 12.1

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Resource: Case Study 12.1 in Chapter 12 of Essentials of Business Statistics.

Click the Sushi Restaurant Data Set link.

Calculate the linear regression in item 1 of the case study.

Discuss the following with your team:

· Explain if simple regression or multiple regression is more appropriate for making predictions in this case.

· Predict what will happen to sales based on unemployment rate and the level of advertising

· Justify your predictions.


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QNT 275 Week 4 Quiz

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QNT 275 Week 4 Quiz

Question 1: • Serial correlation is typically observed in:

Question 2: • Another name for an explanatory variable is the ___.

Question 3: • Which of the following variables is not qualitative?

Question 4: • Consider the following simple linear regression model: y=βo+β1^(x+ε) The response variable is:


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QNT 275 Week 5 CLO Business Decision Making Project Part 3

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CLO Business Decision Making Project, Part 3

Prepare an 11- to 15-slide Microsoft® PowerPoint® presentation for the senior management team based on the business problem or opportunity you described in Weeks 3-4.

Include on the slides what you'd want the audience to see (include appropriate visual aids/layout) and include in the Speaker's Notes section what you'd say as you present each slide. If any source material is quoted or paraphrased in the presentation, use APA citations and references.

Draw on material you developed in the Weeks 3-4 assignments.


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