## STAT 200: Introduction to Statistics Final Examination

STAT 200: Introduction to Statistics Final Examination, Spring 2016 OL1/US1 in \$79 Only

STAT 200: Introduction to Statistics Final Examination, Spring 2016 OL1/US1

1. True or False. Justify for full credit.
(a) The standard deviation of a data set cannot be negative.
(b) If P(A) = 0.4 , P(B) = 0.5, and A and B are disjoint, then P(A AND B) = 0.2.
(c) The mean is always equal to the median for a normal distribution.
(d) A 95% confidence interval is wider than a 98% confidence interval of the same parameter.
(e) In a two-tailed test, the value of the test statistic is 1.5. If we know the test statistic follows a Student’s t-distribution with P(T < 1.5) = 0.98, then we fail to reject the null hypothesis at 0.05 level of significance .
2. Identify which of these types of sampling is used: cluster, convenience, simple random, systematic, or stratified. Justify for full credit.

## RES 341 Entire Week 5

RES 341 Entire Week 5

RES 341 Week 5 Learning Team Assignment Final Research Project Presentation

• Prepare 8-10 Microsoft® PowerPoint® slides with speaker notes, illustrating your Research Project. Your presentation should include any final edits to the Week 4 Learning Team paper and the following items:
• Purpose of the research
• Research question
• Research hypothesis, developed from the research question
• Review of literature
• Sampling design
• Data collection
• Data analysis using descriptive statistics
• Conclusions
• Confidence intervals
• Final recommendations based on your findings

RES 341 Week 5 Individual Assignment Using Probability Distribution in Research Simulation

## RES 341 Entire Week 4

RES 341 Entire Week 4

RES 341 Week 4 Individual Assignment Exercises From the E-Text

• Resource: Applied Statistics in Business and Economics
• Prepare answers to the following exercises from Applied Statistics in Business and Economics:
• Chapter 5: Exercises 5.62 and 5.70
• Chapter Exercises 8.46 and 8.62

Note. Methods of computation could include the usage of Microsoft® Excel®, SPSS, Lotus, SAS®, Minitab®, or by hand computation.

RES 341 Week 4 Learning Team Assignment Descriptive Statistics Paper

• Write and submit a 1,050-1,750-word paper, adding to your Week Three paper, examining the data you have collected and drawing conclusions based on your findings.
• Include the following:
• Data analysis using descriptive statistics
• Calculate the measures of central tendency, dispersion, and skew for your data.
• Display your descriptive statistical data using graphic and tabular techniques.
• Frequency distribution
• Histogram
• Based on your skew value and histogram, discuss the best measures of central tendency and dispersion of your data. Justify your selection.
• Conclusions
• Discuss whether your research findings answered your problem statement—the research question—or if more research might be necessary.

What roles do confidence intervals and estimation play in the selection of sample size? Also, what are the factors that the required sample size is based on?

What is the significance of a 5% significance level? Why would you choose 5% as opposed to 10%? What are the statistically accepted guidelines for significance levels?

Explain the differences in the sampling distributions for xbar (sample mean) for large and small samples under the following assumptions:

1. The variable of interest ‘x’ is normally distributed.

2. Nothing is known about the distribution of the variable ‘x’.

When you draw a sample from a normal distribution, what can you conclude about the sample distribution? Why do so many of life’s events share the same characteristics with Central Limit Theorem?

1. RES 341 Week 4 DQ 1
2. RES 341 Week 4 DQ 2
3. RES 341 Week 4 DQ 3
4. RES 341 Week 4 DQ 4
5. RES 341 Week 4 Individual Assignment Exercises From the E-Text
6. RES 341 Week 4 Learning Team Assignment Descriptive Statistics Paper

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## RES 341 Entire Week 3

RES 341 Entire Week 3

RES 341 Week 3 Individual Assignment Statistical Symbols and Definitions Matching Assignment

• Resources: Statistical Symbols and Definitions Matching Assignment
• Complete the Statistical Symbols and Definitions Matching Assignment located on your student website.

RES 341 Week 3 Individual Assignment Survey Paper

• Develop a problem statement using the business problem selected in Week Two, which can be addressed with survey research.
• Write a 10- to 13-question survey to collect primary data regarding your selected problem statement. You will not administer this survey as part of this assignment.
• Include a mixture of categorical (nominal and ordinal) and quantitative (interval and ratio) variables in your survey questions.
• Write a 700- to 1,050-word analysis of your survey. In your analysis, include the following:
• Determine if your survey questions are appropriate for researching your business problem, and explain why they are.
• Identify the level of measurement being used for each of your survey questions.
• Explain which ethical implications must be considered when developing survey questions.
• Attach your survey as an appendix to your survey paper. Do not use a survey written by someone other than you. The purpose of this assignment is to evaluate your ability to draft survey questions.

RES 341 Week 3 Learning Team Assignment Data Collection Paper

• Resource: Week Two paper, the Internet, the University Library, Electronic Reserve Readings, and other resources
• Locate at least four peer-reviewed, scholarly research articles that are relevant to your research topic.
• Write a 1,050- to 1,750-word paper in which you include an edited version of last week’s Learning Team paper and the following components of the research process:
• Review of literature
• Summarize the peer-reviewed articles.
• Describe how the articles apply to your research topic.
• Sampling design
• Define the population from which your samples came.
• Was the sample size appropriate for this research topic? Explain.
• Identify the possible sources of bias or error that could occur when sampling (validity and reliability).
• Data collection
• Display your data in both tabular and graphical formats.
• Identify some primary data collection methods that could be used to collect data.
•  Discuss any possible ethical concerns regarding the collection of data.

What is the difference between a random variable and a probability distribution? Please provide atleast 2 examples of each kind.

Also, what is the difference between a discrete and a continuous variable?  For each of the following indicate whether the random variable is discrete or continuous and why:

a. The length of time to get a haircut.
b. The number of cars a jogger passes each morning while running.
c. The number of hits for a team in a high school girls¿ softball game.
d. The number of patients treated at the South Strand Medical Center between 6 and
10 P.M. each night.
e. The number of miles your car traveled on the last fill-up.
f. The number of customers at the Oak Street Wendy¿s who used the drive-through facility.
g. The distance between Gainesville, Florida, and all Florida cities with a population of atleast 50,000.

What are the requirements (or characteristics) for the binomial and Poisson? Under what conditions will the binomial and the Poisson distributions give roughly the same results? Show with an example.

What is decision theory? What is the difference between a payoff table and an expected payoff table? In the following payoff table, let P(S1) = 0.30, P(S2) = 0.50, and P(S3) = 0.20. Compute the expected monetary value for each of the alternatives. What decision would you recommend?

A foreman thinks that the low efficiency of the machine tool operators is directly linked to the high level of fumes emitted in the workshop. He would like to prove this to his supervisor through a research study.

1. Would this be a causal or a correlational study? Why?

2. Is this an exploratory, descriptive, or hypothesis-testing (analytical or predictive) study? Why?

3. What kind of a study would this be: field study, lab experiment, or field experiment? Why?

4. What would be the unit of analysis? Why?

5. Would this be a cross-sectional or a longitudinal study? Why?

1. RES 341 Week 3 DQ 1
2. RES 341 Week 3 DQ 2
3. RES 341 Week 3 DQ 3
4. RES 341 Week 3 DQ 4
5. RES 341 Week 3 Individual Assignment Statistical Symbols and Definitions Matching Assignment
6. RES 341 Week 3 Individual Assignment Survey Paper
7. RES 341 Week 3 Learning Team Assignment Data Collection Paper Graph
8. RES 341 Week 3 Learning Team Assignment Data Collection Paper

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If you need any type of help regarding Homework, Assignments, Projects, Case study, Essay writing or any thing else then just email us at question@solvemyquestion.com.  We will get back to you ASAP. Do not forget to maintain the time frame you need you work to be done.

## RES 341 Entire Week 2

RES 341 Entire Week 2

RES 341 Week 2 Individual Assignment Research Terminology Matching Assignment

Resource: Research Terminology Matching Assignment

Complete theResearch Terminology Matching Assignment located on your student website.

RES 341 Week 2 Learning Team Assignment Research Process Paper

• Identify a research issue, opportunity, or problem from one of the data sets available on your student website. The data should consist of at least 30 or more observations of ratio or interval scale data from one of the provided data sets. This issue or problem will serve as the basis for this and subsequent Learning Team assignments, so be sure to obtain instructor approval before completing your Research Process Paper.
• Prepare a 1,050- to 1,750-word paper describing your selected research issue or problem.
• Include a definition of your selection using quantifiable measures.
• Include the following steps of the business research process that must follow for addressing or finding a solution to your selected issue or problem:
• Purpose of the research
• Describe the research problem.
• Explain why the research problem is important.
• Problem definition
• Research hypothesis
• Explain three possible outcomes that may result from this research.
• Define operational definitions for each variable.
• Identify the variables to be tested.
• Define the level of measurement for each variable.
• Define the measurement scale for each variable.
• Discuss briefly the remaining steps in the research process you will follow to complete your final project in Week Four.

How valid/reliable are the statistics presented on the evening news? Why should we be concerned with errors resulting from questionnaire design? How do research design and statistical information affect validity?

Does all data have a mean, median, or mode? Why or why not? When is the mean the best measure of central tendency? When is the median the best measure of central tendency?

What approaches does your organization use to collect samples and conduct market research?  How does your organization use inferential statistics and probability analysis to facilitate its strategic decision making?  What about these approaches do you agree with and disagree with? What changes would you make?

1. RES 341 Week 2 DQ 1
2. RES 341 Week 2 DQ 2
3. RES 341 Week 2 DQ 3
4. RES 341 Week 2 Individual Assignment Research Terminology Matching Assignment
5. RES 341 Week 2 Learning Team Assignment Research Process Paper

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If you need any type of help regarding Homework, Assignments, Projects, Case study, Essay writing or any thing else then just email us at question@solvemyquestion.com.  We will get back to you ASAP. Do not forget to maintain the time frame you need you work to be done.

## QNT 561 Week 3 Individual Assignment A Decision of Uncertainty

Applied Business Research and Statistics- Week Three

Assignment: Decision of Uncertainty Paper

• Resource: Week Three Student Roadmap
• Research statistical data in a business context that requires a decision. Use probability concepts to formulate a decision.
• Writea 700- to 1,050-word paper, explaining your research methods and process for limiting the uncertainty in the decision. Explain the following:
• Include how you applied concepts to formulate your decision
• Include appropriate probability concepts and your application to find resulting data to limit uncertainty in this decision.
• Identify each outcome from your statistical analysis, providing rationale for each.
• Identify tradeoffs between accuracy and precision required by various probability concepts and the effect on your data.
• Include the decision you made based on statistical data.
• Format your paper consistent with APA guidelines.