# RES 342 UOP Tutorial / Uoptutorial

RES 342 ENTIRE COURSE

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RES 342 Week 1 Individual Assignment Hypothesis Identification Article Analysis

RES 342 Week 1 Individual Assignment E-Text

RES 342 Week 2 Individual Assignment E-Text

RES 342 Week 2 Individual Quiz

RES 342 Week 2 Team Assignment One Sample Hypothesis Testing Paper

RES 342 Week 3 Individual Assignment E-Text

RES 342 Week 3 Individual Assignment Applying Analysis of Variance (ANOVA) and Nonparametric Tests Simulation

RES 342 Week 3 Team Assignment Two or More Sample Hypothesis Testing Paper

RES 342 Week 4 Individual Assignment E Text

RES 342 Week 4 Individual Assignment Parametric and Nonparametric Data Identification Assignment

RES 342 Week 4 Individual Quiz

RES 342 Week 4 Team Assignment Nonparametric Hypothesis Testing Paper

RES 342 Week 5 Individual E Text

RES 342 Week 5 Individual Assignment Applying Time Series Methodologies Simulation

RES 342 Week 5 Team Assignment Regression Paper

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RES 342 Week 1 Individual Assignment E-Text

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Resource: Ch. 8 of *Applied Statistics in Business and Economics*

Prepare answers to the following assignments:

Chapter Exercises 8.48

- Chapter Exercises 8.64

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RES 342 Week 1 Individual Assignment Hypothesis Identification Article Analysis

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Use the University Library or the Electronic Reserve Readings to locate a peer-reviewed article that reports original research and pertains to a specific, stated hypothesis that was used to validate a research study.

Use major databases in the Online Collection and the key search words *research studies in* to obtain an article.

Select communication, finance, economics, marketing, technology, or another faculty approved topic for the research study.

Prepare a 350- to 700-word analysis of your selected article. Start by identifying and summarizing the hypothesis described in the article.

Explain whether the hypothesis was rejected or accepted and what the implications of this finding are for the study.

Format your paper consistent with APA guidelines.

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RES 342 Week 2 Individual Assignment E-Text

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Resource: Ch. 9 of *Applied Statistics in Business and Economics*

Prepare answers to the following assignments:

Chapter Exercises 9.54

Chapter Exercises 9.56

Chapter Exercises 9.62

Chapter Exercises 9.64

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RES 342 Week 2 Individual Quiz

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Prepare to take a quiz on topics covered in previous weeks.

RES/342 Week One: One Sample Hypothesis Testing

Objective: Identify the formal hypothesis testing process.

1. Hypothesis testing is the statistical process of analyzing sample data by using probability theory to determine whether a stated hypothesis is reasonable. For a particular test, a business owner wanted to know whether changes in a production practice resulted in significant timesaving in manufacturing the company’s product. The business owner develops the alternative hypothesis that the population mean after the change is less than the population mean before the change. To test this question,

a. 0 a two-tailed test should be applied

b. 0 a left-tailed test should be applied is the correct answer

c. 0 a right-tailed test should be applied

d. 0 more information is required to make a decision

Objective: Perform a hypothesis test of one proportion.

2. The Roman Senate has become concerned about the loyalty of the army in Gaul commanded by Julius Caesar. They claim that, of the 80,000 men in the army, at least 28,000 are foreign barbarians. Caesar believes that there are fewer barbarians, so the Senate should not worry. He polls a legion of 1,000 men and finds that 340 of them are barbarians. Assume the value of the test statistic is -0.70. Calculate the p-value for this test using Microsoft Excel.

a. 0 =NORMSDIST(-0.7) yes

b. 0 =TDIST(-0.70,999,1)

c. 0 =2*(NORMSDIST(-0.7))

d. 0 =TDIST(0.7,999,2)

Objective: Perform a hypothesis test of one population mean using the standard normal distribution.

3. The manager of a fast food restaurant is concerned that it is taking too much time for drive-thru customers to be processed. The time period of concern is from when a customer’s order is placed to when he or she receives his or her food. An acceptable amount of time for this process has been 1.3 minutes. To address this concern, a sample test was conducted. A sample of 24 random customers was taken and it was determined that the processing time was 1.41 minutes, with a standard deviation of 0.12 minutes. Is this difference significant? At the 0.05 significance level, which of these statements is correct?

a. 0 The critical value is ±1.96.

b. 0 The critical value is 1.714. yes

c. 0 The test statistic is 0.92.

d. 0 The test statistic is 4.58.

Objective: Interpret the results of hypothesis tests.

4. The mean length of a small counterbalance bar is 43 millimeters. There is concern that the adjustments of the machine producing the bars have changed. Test the claim, at the 0.02 level, that there has been no change in the mean length. The alternate hypothesis is that there has been a change. Twelve bars (n = 12) were selected at random and their lengths were recorded. The lengths are, in millimeters, 42, 39, 42, 45, 43, 40, 39, 41, 40, 42, 43, and 42. The mean of the sample is 41.5 and the standard deviation is 1.784. Computed, t equals – 2.913. Has there been a statistically significant change in the mean length of the bars?

a. 0 A larger test sample is needed.

b. 0 Yes, because the computed t lies in the area beyond the critical value correct

c. 0 No, because the information given is not complete

d. 0 No, because the computed t lies in the area to the right of –2.718

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RES 342 Week 2 Team Assignment One Sample Hypothesis Testing Paper

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Use the ratio or interval numerical data from one of the data sets available through the Data Sets link on your student website.

Develop one research question from which you will formulate a research hypothesis.

Prepare a 1,050- to 1,750-word paper describing the results of a hypothesis test of one population mean or population proportion.

Include the following in your paper:

Formulate both a numerical and verbal hypothesis statement regarding your research issue.

Perform the five-step hypothesis test on data pertaining to your selection.

Describe the results of your test and explain how the findings from this hypothesis testing may be used to answer your research question.

**Include** your raw data tables and the results of the computations of your z-test or t-test using graphical and tabular methods of displaying data and results.

**Format **your paper consistent with APA guidelines.

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RES 342 Week 3 Individual Assignment Applying Analysis of Variance (ANOVA) and Nonparametric Tests Simulation

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Resource: Applying ANOVA and Nonparametric Tests Simulation

Complete the Applying ANOVA and Nonparametric Tests simulation located on your student website.

Prepare a 350- to 700-word summary addressing the following items:

What are three lessons you learned relative to ANOVA and nonparametric tests?

As a result of using this simulation, what concepts and analytic tools will you be able to use in your workplace (i.e., how do you expect to apply what you learned)?

Based on your experience, what additional information would you recommend to the key decision maker in the simulation to solve the challenge given?

Format your paper consistent with APA guidelines.

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RES 342 Week 3 Individual Assignment E-Text

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Resource: Ch. 10 & 11 of *Applied Statistics in Business and Economics*

Prepare answers to the following assignments:

Chapter Exercises 10.30

Chapter Exercises 10.44

Chapter Exercises 10.46

Chapter Exercises 10.56

Chapter Exercises 11.24

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RES 342 Week 3 Team Assignment Two or More Sample Hypothesis Testing Paper

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Use the numerical data from one of the data sets available through the Data Sets link on your student website.

Develop one business research question from which you will formulate a research hypothesis that will test two or more populations.

Prepare a 1,050- to 1,750-word paper describing the results of a hypothesis test of two populations or more than two populations.

Include the following in your paper:

Formulate both a numerical and verbal hypothesis statement regarding your research issue.

Perform the five-step hypothesis test on data pertaining to your selection.

Describe the results of your test, and explain how the findings from this hypothesis testing can be used to answer your research question.

**Include** your raw data tables and the results of your computations in your paper, using graphical and tabular methods of displaying data and results.

**Format **you paper consistent with APA guidelines.

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RES 342 Week 4 Individual Assignment E Text

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Resource: Ch. 15 of *Applied Statistics in Business and Economics*

Prepare answers to the following assignments:

Chapter Exercises 15.18

Chapter Exercises 15.22

Chapter Exercises 15.24

Chapter Exercises 15.28

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RES 342 Week 4 Individual Assignment Parametric and Nonparametric Data Identification Assignment

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Resources: Parametric and Nonparametric Data Identification Assignment

Complete the University of Phoenix Material, Parametric and Nonparametric Data Identification Assignment located on your student website.

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RES 342 Week 4 Individual Quiz

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Prepare to take a quiz on topics covered in previous weeks.

RES/342 Week Two: Two or More Sample Hypothesis Testing

Objective: Apply hypothesis testing to different populations and samples in business research situations.

5. In conducting research that looks at differences in populations, samples are used for numerous reasons. Using entire populations in a test is difficult, so various sampling techniques are applied. In situations in which the population variance is unknown, the Student t distribution is often used. To use this distribution, certain assumptions must be made. Which of the following statements is not correct?

a. 0 The t distribution is a family of distributions.

b. 0 It is a symmetrical, mound shape distribution.

c. 0 It is a continuous distribution.

d. 0 It has less spread than the standard normal distribution.

Objective: Perform a hypothesis test of two population means using the standard normal distribution.

6. The Ohio State Patrol has identified eight intersections in Clermont County of high risk, due to the number of accidents. To address these concerns, the state patrol wants to make some changes in the traffic light patterns at these intersections. A proposal was developed to do a 4-month test of these changes at the eight intersections to see whether a significant decrease in accidents occurred. The number of accidents 2 months before the modifications at the eight intersections was 57 and the number of accidents 2 months after the modification was 37. To conduct the test, the .01 significance level was selected. The test statistic was -2.415. What would be the critical value for the test decision to be made?

a. 0 2.624

b. 0 -2.998

c. 0 2.947

d. 0 2.602

Objective: Perform a hypothesis test of two proportions.

7. Historically, single-income households or individuals have made up about 27 percent of the housing market. A sample of 80 recent mortgages indicated that 24 single-income families or individuals purchased a new home. Has there been a change in this historical belief?

a. 0 The market has not changed.

b. 0 The market is generally difficult to predict due to the changing economy.

c. 0 The market has changed.

d. 0 More information is needed to make any statement.

Objective: Determine when to use an ANOVA for managerial decisions.

8. A business owner is trying to decide between three different ads for the yellow pages. The ads are of different sizes and costs. The owner wants to get the best deal possible to save money, but wants to effectively reach potential customers. The question is whether there is a significant difference between the three different ads in their effectiveness in reaching customers. To make a more informed decision, the manager should choose which statistical test?

a. 0 Linear regression correlation

b. 0 Goodness-of-fit test

c. 0 Simple linear regression

d. 0 Analysis of variance (ANOVA)

Objective: Perform an ANOVA.

9. On-Time, a package delivery company, just purchased 14 new trucks from three different companies. Five trucks were purchased from manufacturer A, four from B, and five from C. The cost of maintaining each truck was recorded. On-Time used an ANOVA to test whether the mean maintenance costs of the trucks from each manufacturer were equal. To make the decision regarding this hypothesis, a critical value is required. What would be the critical value for the decision when the 0.01 significance level is used?

a. 0 6.22

b. 0 7.56

c. 0 7.21

d. 0 6.93

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RES 342 Week 4 Team Assignment Nonparametric Hypothesis Testing Paper

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**Use** the same research question and data from the Learning Team Meeting Two assignment.

**Conduct** the equivalent, nonparametric test of hypothesis using the five-step process.

**Prepare** a 1,050- to 1,750-word paper describing the results of the nonparametric hypothesis test. Include the following in your paper:

Formulate a hypothesis statement regarding your research issue.

Perform the five-step hypothesis test on the data.

Explain which nonparametric test you used to analyze your data and why you chose that test.

Interpret the results of your test, and explain the differences, if any, that you observe from your Week Three paper.

**Include** your raw data tables and the results of your computations in your paper, using graphical and tabular methods of displaying data and results.

**Format** your paper consistent with APA guidelines.

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RES 342 Week 5 Individual Assignment Applying Time Series Methodologies Simulation

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Resources: Applying Time Series Methodologies

Complete the Applying Time Series Methodologies simulation.

Prepare a 350-word memo toMyra Reid, the Vice President of Production at Blue Inc. Inform Myra of your forecasts and explain the reasons for your decision.

Account for results of the previous two cycles of the simulation in your explanation to Myra.

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RES 342 Week 5 Individual E Text

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Resource: Ch. 12–14 of *Applied Statistics in Business and Economics*

Prepare answers to the following assignments:

Chapter 12 Review # 1

Chapter Exercises 12.48

Chapter Exercises 12.50

Chapter Exercises 13.30

Chapter Exercises 13.32

Chapter Exercises 14.16

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RES 342 Week 5 Team Assignment Regression Paper

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**Use** the numerical data from one of the data sets available through the Data Sets link on your student website.

**Develop** one research question and formulate a hypothesis which may be tested with linear regression analysis.

**Prepare** a 1,050- to 1,750-word paper describing the results of the linear regression analysis on your collected data.

**Include **the following in your paper:

Formulate a hypothesis statement regarding your research issue.

Perform a regression hypothesis test on the data.

Interpret the results of your regression hypothesis test.

**Include** your raw data tables and the results of your computations in your paper, using graphical and tabular methods of displaying data and results.

**Format** your paper consistent with APA guidelines.

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