BUS 308 ASH Material - bus308dotcom

1. BUS 308 ASH Material-bus308dotcom

2. BUS 308 ASHMaterial BUS 308 Entire Course (Ash Course) BUS 308 Entire Course (Ash Course) • BUS 308 Week 1 Assignment Problems 1.2, 1.17, 3.3 & 3.22BUS 308 Week 1 DQ 1 Performance ReportBUS 308 Week 1 DQ 2 The Empirical Rule vs. Chebyshev TheoremBUS 308 Week 1 Quiz (10 MCQ)BUS 308 Week 2 Assignments Problems 4.4, 4.20, 5.12, 6.22(a)BUS 308 Week 2 DQ 1 Relative FrequencyBUS 308 Week 2 DQ 2 BUS 308 Week 2 Quiz (10 MCQ)BUS 308 Week 3 Assignments Problems 7.11, 7.30, 8.8, 8.38BUS 308 Week 3 DQ 1 Unscientific SamplingBUS 308 Week 3 DQ 2 Article Review • BUS 308 Week 3 Quiz (10 MCQ)BUS 308 Week 4 Assignments Problems 9.13, 9.22, 12.10, 12.18(a)BUS 308 Week 4 DQ 1 Hypothesis TestBUS 308 Week 4 DQ 2 Creating HypothesesBUS 308 Week 4 Quiz (10 MCQ)BUS 308 Week 5 DQ 1 Linear CorrelationBUS 308 Week 5 DQ 2 Quality ControlBUS 308 Week 5 Final Part I - ExcelBUS 308 Week 5 Final Part II Analysis Paper on gas prices

3. BUS 308 ASHMaterial BUS 308 Week 1 Assignment Problems 1.2, 1.17, 3.3 & 3.22 BUS 308 Week 1 DQ 1 Performance Report • BUS 308 Week 1 Problems 1.2, 1.17, 3.3 & 3.22 • You are the manager at a company and are asked to present a report on the year-to-date performance of your division. What type of statistical information would you include in your report? In particular, which descriptive statistics (mean, median, standard deviation, etc.) do you think would best represent the main aspects of the performance of your division? What types of graphical presentation (histogram, dot plot, stem-and-leaf, bar chart, etc.) would you include? Explain your reasoning

4. BUS 308 ASHMaterial BUS 308 Week 1 DQ 2 The Empirical Rule vs. Chebyshev Theorem BUS 308 Week 1 Quiz (10 MCQ) • The Empirical Rule vs. Chebyshev’s Theorem • Discuss how the Empirical Rule works and how it relates to the bell curve as illustrated in Figure 3.14 (a). Then, explain Chebyshev’s Theorem and how it is different from the Empirical Rule. Give a specific example of a population with which the Empirical Rule might be most effective and one with which Chebyshev’s Theorem might be most effective. Respond to at least two of your classmates’ postings • 1. Question : The two types of quantitative variables are • 2. Question : As a general rule, when creating a stem-and-leaf display, there should be between ______ stem values. • 3. Question : The median is the value below which and above which approximately 50 percent of the measurements lie. • 4. Question : Temperature in degrees Fahrenheit is an example of a ____ variable. • 5. Question : Stem-and-leaf displays and dot plots are useful for detecting

5. BUS 308 ASHMaterial BUS 308 Week 2 Assignments Problems 4.4, 4.20, 5.12, 6.22(a) BUS 308 Week 2 DQ 1 Relative Frequency • BUS 308 Week 2 Assignments Problems 4.4, 4.20, 5.12, 6.22(a) • Relative Frequency. Conceptually we would expect the probability of newborn males and females to be the same. However, census reports indicate that the ratios of males and females in various countries do not conform to the theoretical prediction. What do you think accounts for this variation? Can you think of other cases where the expected probabilities do not quite agree with the empirical values?

6. BUS 308 ASHMaterial BUS 308 Week 2 DQ 2 Applications for Probability BUS 308 Week 2 Quiz (10 MCQ) • Applications for Probability. In what situations might you use probability as a manager to approach business-related problems? What are the advantages to using probability concepts in business decisions? Are there any disadvantages or possible pitfalls to avoid in using probability in business? • Question : In a statistical study, the random variable X = 1, if the house is colonial, and X = 0 if the house is not colonial, then it can be stated that the random variable is continuous. • 2. Question : The set of all possible experimental outcomes is called a(n) • 3. Question : If two events are independent, then the probability of their intersection is represented by: • 4. Question : A(n) __________ is a measure of the chance that an uncertain event will occur.

7. BUS 308 ASHMaterial BUS 308 Week 3 Assignments Problems 7.11, 7.30, 8.8, 8.38 BUS 308 Week 3 DQ 1 Unscientific Sampling • BUS 308 Week 3 Assignments Problems 7.11, 7.30, 8.8, 8.38 • Unscientific Sampling. Consider question 7.45 from the text: A Milwaukee television station, WITI-TV, conducted a telephone call-in survey asking whether viewers liked the new newspaper, the Journal Sentinel. On April 26, 1995, Tim Cuprisin, a columnist for the Journal Sentinel, wrote the following comment: “WITI-TV (Channel 6) did one of those polls—which they admit are unscientific—last week and found that 388 viewers like the new Journal Sentinel and 2,629 didn’t like it.

8. BUS 308 ASHMaterial BUS 308 Week 3 DQ 2 Article Review BUS 308 Week 3 Quiz (10 MCQ) • Article Review. Many articles present statistical data and list margins of error (for example, reports on political opinion polls, growth or decline of the housing markets, manufacturing sectors, etc.). Find one such article from a reliable source (such as EBSCO or Proquest) in the online library that includes a construction of confidence intervals for the data studied, and give a summary of the topic and the statistical results presented. In particular, discuss whether there is enough information presented in the article to arrive at the same conclusion as reported • 1. Question : There is little difference between the values of ta/2 and Za/2 when the sample • 2. Question : If the population proportion is .4 with a sample size of 20, then is this sample large enough so that the sampling distribution of is a normal distribution. • 3. Question : For non-normal populations, as the sample size (n) _________, the distribution of sample means approaches a/an __________ distribution. • 4. Question : As the sample size ________the variation of the sampling distribution of ___________.

9. BUS 308 ASHMaterial BUS 308 Week 4 Assignments Problems 9.13, 9.22, 12.10, 12.18(a) BUS 308 Week 4 DQ 1 Hypothesis Test • BUS 308 Week 4 Assignments Problems 9.13, 9.22, 12.10, 12.18(a) • Give an example of a hypothesis test you could perform at work or at home. State what the Null and the Alternative hypotheses would be in your test. Explain how you would settle on a reasonable level of significance for your scenario. Also explain what the type I and II errors would be if you reached the incorrect conclusion in your test.

10. BUS 308 ASHMaterial BUS 308 Week 4 DQ 2 Creating Hypotheses BUS 308 Week 4 Quiz (10 MCQ) • Creating Hypotheses. Assume you are the manager of a paint manufacturing factory. Your company has received complaints from customers that the containers hold less than the amount printed on them. On the other hand, corporate management is concerned that the containers hold more than the standard amount. You assign a statistician to verify these claims. • Question : Consider using p-value to test H0 versus Ha by setting α equal to .10. We reject H0 at level α of significance if and only if the p-value is: • 2. Question : When carrying out a sample test (with ó known) of H0: µ = 10 vs. Ha: µ > 10 by using a rejection point, we reject Ho at level of significance a if and only if the calculated test statistic is • 3. Question : When using the chi-square goodness of fit test, if the value of the chi-square statistic is large enough, we reject the null hypothesis.

11. BUS 308 ASHMaterial BUS 308 Week 5 DQ 1 Linear Correlation BUS 308 Week 5 DQ 2 Quality Control • Linear Correlation. Do you think there is a correlation between CEO salaries and the degree of success of a company? If you were to take a sample of companies with comparable size, market capitalization, and product category, and plot CEO salaries against the net profit of their respective companies, do you expect to find a linear correlation between the two? Explain • Quality Control. Visit the websites on Quality Control (QC) listed in the Required Websites for this week. In addition, locate an article on the Internet or in the Library databases that describes an example of the use of statistics in Quality Control. In your post, briefly define Quality Control and explain its importance. Also, describe some of the most widely used tools in the industry for measuring and controlling quality

12. BUS 308 ASHMaterial BUS 308 Week 5 Final Part I – Excel BUS 308 Week 5 Final Part II Analysis Paper on gas prices • Calculate the mean yearly value using the average gas prices by month found in the "Final Project Data Set". • 2. Using the years as your x-axis and the annual mean as your y-axis, create a scatterplot and a linear regression line. • 3. Answer the following questions using your scatterplot and linear regression line:* What is the slope of the linear regression line?* What is the Y-intercept of the linear regression line?* • What is the equation of the linear regression line, in slope-intercept form?* Based on the linear regression line, • what would be an estimated cost of gas in the year2020?* What are the residuals of each year?* • Imagine that you are a manager at a delivery service and you are creating a report toproject the effects on your company of rising gas prices in the next ten years. • Using thepreceding statistical analysis as your basis and outside scholarly resources to support yourclaims, • write a 3 to 5 page paper interpreting the results from this perspective. Include thefollowing considerations:

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