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RES 341 Entire Course RES 341 Week 1 Complete DQs (1) How would you define research? What is the purpose of business research? How has the Internet changed the quality and quantity of research? (2) Should an organization create research testing for all problems confronting the business? Why or why not? When is it appropriate to use exploratory research? Can decision-making be accomplished by using only descriptive research? Why or why not? (3) What is the reliability of a measurement? What is the validity of a measurement? Can a measurement be valid if it is not reliable? Explain. RES 341 Week 1 Individual Assignment Current Business Research Project PaperGreen Products RES 341 Week 1 Exercise 4.4 RES 341 Week 2 Complete DQs (1) What are some of the differences between primary and secondary data? What are some disadvantages of using newspaper articles or magazine articles as secondary sources? Why should you use both primary and secondary data in research? (2) 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? (3) What is a real-world example of a sample? A population? Compare and contrast probability sampling with non-probability sampling, giving an example of each. RES 341 Week 2 Individual Assignment Research Terminology Matching Assignment RES 341 Week 3 Complete DQs (1) 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? (2) What are some differences between discrete and continuous data? Is the measurement of money continuous or discrete? Explain. Can discrete data be analyzed using a normal distribution? Why or why not?
(3) Describe the properties of a normal distribution. Explain why there are an infinite number of normal distributions. Why do we want to assume that our sample data represent a population distribution? RES 341 Week 3 Individual Assignment Survey Paper Topic Major League Baseball RES 341 Week 3 Individual Assignment Survey Paper Topic Self-efficasy and cigarrete smoking RES 341 Week 3 Individual Assignment Survey Paper Topic Wage Earners RES 341 Week 3 Statistical Symbols and Definitions Matching Assignment RES 341 Week 4 Complete DQs (1) Why is the population shape a concern when estimating a mean? What effect does sample size, n, have on the estimate of the mean? Is it possible to normalize the data when the population shape has a known skew? How would you demonstrate the Central Limit Theorem to your classmates? (2) What do confidence intervals represent? What is the most controllable method of increasing the precision (narrowing) of the confidence interval? What percentage of times will the mean (population proportion) not be found within the confidence interval? (3) A mayoral election race is tightly contested. In a random sample of 1,100 likely voters, 572 said that they were planning to vote for the current mayor. Based on this sample, what is your initial hunch? Would you claim with 95% confidence that the mayor will win a majority of the votes? Explain. RES 341 Week 4 Individual Assignment Exercises From the E-Text 5.62 5.70 RES 341 Week 4 Individual Assignment Article Review RES 341 Week 4 Exercise 4-2 Confidence Interval RES 341 Week 4 R5 Quiz RES 341 Week 5 Complete DQs (1) A significance test is used to prevent a machine from under filling or overfilling quart bottles. On the basis of a sample, the null hypothesis is rejected and the machine is shut down for inspection. A thorough examination reveals there is nothing wrong with the filling machine. From a statistical standpoint, was there a “type” error made? If yes, which type? Explain (2) Suppose that you perform a significance test regarding a population mean, and that the evidence does not warrant rejection of the null hypothesis. When formulating the conclusion to the test, why is the phrase “fail to reject the null hypothesis” more accurate than the phrase “accept the null hypothesis”? Why can the null hypothesis not be proved? Explain. (3) A man is on trial accused of murder in the first degree. The prosecutor presents evidence that he hopes will convince the jury to reject the hypothesis that the man is innocent. This situation can be modeled as a significance test with the following hypotheses: RES 341 Week 5 Individual Assignment Exercises From the E-Text Chapters 5 and 6 Exercises 8.46 and 8.62 RES 341 Week 5 Individual Assignment Using Probability Distribution in Research Simulation RES 341 Week 5 Quiz RES 341 Week 5 Final Exam 8 versions Consolidated