QNT 275
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1
To make tests of hypotheses about more than two population means, we use the:
t distribution
normal distribution
chisquare distribution
analysis of variance distribution
2
You randomly select two households and observe whether or not they own a.....

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QNT 275 Week 1 Apply Connect Week 1 Exercise
Review the glossary in your textbook in preparation for this assignment.
Complete the Week 1 Exercise in Connect.
Note: You have only 1 attempt available to complete assignments.
1.
Define Ratio Variable.
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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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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 y.....

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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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Develop a 875word 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.
§ Evalu.....

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The following table lists the number of deaths by cause as reported by the Centers for Disease Control and Prevention on February 6, 2015:
Cause of Death Number of Deaths
Heart disease 611,105
Cancer 584,881
Accidents 130,557
Stroke .....

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You are employed as a statistician for a company that makes household products, which are sold by parttime 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 recor.....

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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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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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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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1.
In a hearing test, subjects estimate the loudness (in decibels) of a sound, and the results are: 69, 67, 71, 72, 65, 75, 68, 68, 83, 73, 68.
Calculate the measures of central tendency (Mean, median, mode) and the measures of dispersion (range, standard deviation, variance).
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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 st.....

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I2 (Week 2) Individual Assignment: Business Problem: Prepare a paper examining a business problem confronting your organization or an organization you know of that you feel could be addressed through the application of the business research process. Describe the problem. Then present the res.....

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Purpose of Assignment
This assignment provided students with practice in understanding the relationship of averages and standard deviation to make an informed business decision about the gross income performance of each movie genre. Students will learn to implement the use of these stat.....

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List the simple events for each of the following statistical experiments in a sample space.
One roll of a die.
Note: Separate your response with a comma (,). For example 22, 23, 24
Three tosses of a coin.
Note: Use this notation for your answer. heads = H. tails = T. Fo.....

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QNT 275 Week 2 Quiz
1. In order to summarize qualitative data, a useful tool is a __________.
2. A stemandleaf diagram is constructed by separating each value of a data .....

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This Tutorial contains 2 Papers
CLO Business DecisionMaking 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 ass.....

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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.
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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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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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1.
A survey is made in a neighborhood of 90 voters. 75 are Democrats and 15 are Republicans. Of the Democrats, 30 are women, while 7 of the Republicans are women. If one subject from the group is randomly selected, find the probability the individual is a male Republican.
2.
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Individual Assignment: Descriptive Statistics:
Identify a research problem different from the previous research problems that uses two different sets of the same type of data. Example: Sales from two different months or years. GPA's of men and women. Number of two different shelf items sold (.....

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Let x be a continuous random variable. What is the probability that x assumes a single value, such as a (use numerical value)?
The following are the three main characteristics of a normal distribution.
The total area under a normal curve equals _____.
A normal cu.....

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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 13.
Discuss your findings for the probabilities.
What was the smok.....

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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.....

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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 1,05.....

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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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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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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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1.
A sample of 100 items has a population standard deviation of 5.9 and a mean of 32. Construct a 95 percent confidence interval for μ.
2.
At the end of 1990, 1991, and 1992, the average prices of a share of stock in a portfolio were $34.75, $34.65, and $31.25 respecti.....

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Individual Assignment: ttest I4: Identify a research problem different from the previous research problems that uses two different sets of the same type of data. Any subject may be chosen. Some examples: Sales from two different months or years. GPA's of men and women. Number of two differe.....

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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:
· .....

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Find z for each of the following confidence levels. Round to two decimal places.
90%
95%
96%
97%
98%
99%
For a data set obtained from a random sample, n = 81 and x = 48.25. It is known
that σ = 4.8.
What is the point estimate of μ? Round to two decim.....

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Prepare an 11 to 15slide Microsoft® PowerPoint® presentation for the senior management team based on the business problem or opportunity you described 13 and 14
Include on the slides what you would want the audience to see (include appropriate visual aids/layout). In the.....

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QNT 275 Week 4 Quiz
Question 1: • Serial correlation is typically observed in:
Question 2: • Anot.....

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Prepare an 11 to 15slide Microsoft® PowerPoint® presentation for the senior management team based on the business problem or opportunity you described in Weeks 3 and 5.
Include on the slides what you would want the audience to see (include appropriate visual aids/layout). In the Speaker Not.....

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This Tutorial contains 2 Presentations
CLO Business Decision Making Project, Part 3
Prepare an 11 to 15slide Microsoft® PowerPoint® presentation for the senior management team based on the business problem or opportunity you described in Weeks 34.
I.....

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How would you select appropriate statistical tests for analysis research data? What aspects of research questions or data types are relevant considerations in choosing your tests? Why?
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How do you know you have validated a research study based on data gathered from primary or secondary sources? Have you been involved with any product testmarketing project? Explain. How did the resulting statistics affect the product's marketing strategy? How can organizations skew the statistic.....

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In what way has the learning from this course helped you to effectively test hypotheses, draw conclusions, and provide recommendations to management? Consider what you have achieved in your research study conducted for this course.
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Individual Assignment Final: ztest: Identify a research problem different from the previous research problems that uses two different sets of the same type of data. Example: Sales from two different months or years. GPA's of men and women. Number of two different shelf items sold (Coke &.....

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Individual Assignment Final: ztest: Identify a research problem different from the previous research problems that uses two different sets of the same type of data. Example: Sales from two different months or years. GPA's of men and women. Number of two different shelf items sold (Coke &.....

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1. This distribution has only one parameter. The curve is skewed to the right for small df and
becomes symmetric for large df. The entire distribution curve lies to the right of the vertical
axis. The distribution assumes nonnegative values only
1. t distribution
2. Normal distrib.....
