Develop one business research question from which you will formulate a research hypothesis that will test 2 or more populations Prepare a paper describing the results of a hypothesis test of two populations or more than two populations Include the following in your paper: A-Formulate both a numerical and verbal hypot
Identify the null hypothesis and alternative hypothesis from a given claim, and determine how to express both in symbolic form. The formulas and data are attached. What is needed is to do is explain what is going on in the Excel spreadsheet; basically, make a translation of the math into english. --- Null Hypothesis The
What is the importance of the null hypothesis? Why has it been the backbone of mainstream hypothesis testing for decades? What are its limitations? What is the value of performing hypotheses tests to solve problems related to business and operations management? Provide specific examples.
Statistical Techniques in Business & Economics 21. What is sampling error? Could the value of the sampling error be zero? If it were zero, what would this mean? 22. List the reasons for sampling. Give an example of each reason for sampling. 34. Information from the American Institute of Insurance indicates the mean amou
Please us the data set and key provided in attached file. Using AIU's survey responses from the AIU data set, complete the following requirements in the form of a report: Perform a two-tailed hypothesis test on the intrinsic variable AND a two-tailed hypothesis test on the extrinsic variable's data using a .05 significanc
Bring to mind a research question that interests you, or a current event that utilizes statistics to present results, that you can use as an example for this discussion. State the research question or the current event and results. Based on what you have learned, and using your example, how do you believe statistics can enric
Find the most appropriate statistical procedure: a. Teacher of low-level reading group interested in average score for group of 25 students? b. Administrator wants to find out if relationship between teacher absences and student achievement exists? c. Math teacher wants to know how many groups should be formed w
Statistics: Decision rule for baseball team salaries Team C is taken salaries from 15 randomly selected MLB teams in two conferences. At α = .05, is there a difference in the mean for all teams in the American League and National League? We think it is unlikely that there is a significant difference, but we will do a test of means to see whether our intuition is correct. To check for a significant difference without regard for its direction, we choose a two-tailed test. The hypotheses to be tested are H0: μ1 = μ2 H1: μ1 _= μ2 Step 3: Calculate the Test Statistic The sample statistics are
See the attached file. Team C is taken salaries from 15 randomly selected MLB teams in two conferences. At α = .05, is there a difference in the mean for all teams in the American League and National League? We think it is unlikely that there is a significant difference, but we will do a test of means to see whether our
Please show all the step as required. Note: For hypothesis testing, the following procedure is recommended: - Step 1: State H0 an H1, Choose - Step 2: Determine Population Parameters [if possible] and Sample Statistics - Step 3: Determine Statistical Technique for Use - Step 4: Determine Rejection Region Based on Cr
A corporate CEO reviews the earnings of three divisions over the last eighteen months. Each division reports its earnings quarterly. Based on the earnings below, is there sufficient evidence to conclude, at the 99% level of confidence, that one of these divisions is more profitable than the others? Division I Div
True or False: Your population mean used to be 6.0. The population standard deviation is 9. The sample size is 9. The sample mean is 7.0. .05 is your level of significance. The null hypothesis is that the population mean is less than or equal to 6.0, use your sample data to test this claim. If you use this information, you will
A. What value is business research and hypothesis testing to a company? How long should it take a company to complete a scientific research study? b. How is hypothesis testing used in politics? Explain your response. When and how would you use hypothesis testing at your place of employment?
See attached file. Identify and summarize the hypothesis described in the article and explain whether the hypothesis was rejected or accepted and what the implication of the finding are for the study.
Conduct a Discriminant Analysis on the GRADUATE.sav file. Use PHD as the dependent variable and create a discriminant function to predict whether the person will finish his or her PhD. Discuss all output.
Please show the work only where its necessary on a separate file. The international Olympic Committee states that the female population in the 2000 Summer Olympic games was 42%, even with the new sports added to the Games. Sponsoring companies want to change their advertising and marketing plans if the female participation
An extensive study of the cost of health care in the United States presented data showing that the mean spending per Medicare enrollee in 2003 was $6883 (Money, Fall 2003). To investigate differences across the country, a researcher took a sample of 40 Medicare enrollees in Indianapolis. For the Indianapolis sample, the mean 200
(a) What is the critical value and how is the critical value used in hypothesis testing? (b) Look at the example in the attachment about the new drug, Releeva. In the Releeva example, the sample size is sufficiently large (100 patients), thus we can assume normality and use a Z statistic for the hypothesis testing procedur
See attached files. 1. You are the manager of a restaurant that delivers pizza to college dormitory rooms. You have just changed your delivery process in an effort to reduce the mean time between the order and completion of delivery from the current 25 minutes. From past experience, you can assume that the population st
1. When a researcher has two samples with two means, one of the assumptions for two samples is independence of between the two samples. What does this mean? What happens if the independence assumption is violated? 2. What are the differences among a proportion, a percentage, and a ratio? When would a researcher use a hypothe
Suppose you want to study the population of full-time college students in State X. In this state, there are 200,000 full-time college students. Out of these students,50,000 students study at private schools, and the other 150,000 students study at state schools. You have drawn a stratified sample using private school students an
1. Describe what is measured by the estimated standard error in the bottom of the independent-measures t statistics. 2. Do you view a chocolate bar as delicious or as fattening? Your attitude may depend on your gender. In a study of American college students, Rozin, Bauer, and Catanese (2003) examined the importance of food a
Question 1 The New York study indicated that the average number of beds in the sampled data was 215. It is known that the average number of beds in the population of interest is 136. Test using a two tailed hypothesis. Test the hypothesis that the mean of 215 is statistically equal to 136. That is, any difference
A random selection of volunteers at a research institute have been exposed to a typical cold virus. After they started to have cold symptoms, 15 of them were given multivitamin tablets daily which contain 1 gram of vitamin C and various other vitamins and minerals. The remaining 15 volunteers were given tablets only containing 4
1. If the alternative hypothesis states that mu > 6700 the rejection region for the hypothesis is: a) Both tails b) Lower tail c) Upper tail d) Center e) None of the above 2. For a one tailed hypothesis test, the critical value of the test statistic is -2.33. Which of the following is true about the hypothesis test? a)
1. In Dallas, some fire trucks were painted yellow (instead of red) to heighten their visibility. During a test period, the fleet of red fire trucks made 153,348 runs and had 20 accidents, while the fleet of yellow fire trucks made 135,035 runs and had 4 accidents. At alpha = .01, did the yellow fire trucks have a significantly
(AARP) reports that 60% of retired persons under the age of 65 would be willing to return to work on a full time basis if a suitable job were available. A sample of 700 retired persons under the age of 65 revealed 520 would return to work. Can we conclude that more than 60% of retired people in the age group would return to
Please assist with all parts. Thank you!!! Palm Products Company has collected data on its average variable costs of production for the past 12 months. The costs have been adjusted for inflation by deflating with an appropriate price index. The AVC and associated output data are presented below: obs Q AVC obs Q A
Formulate both a numerical and verbal hypothesis statement regarding the wages of different ages. Wage Industry Occupation Ed South Nonwh Hisp Fe Ex Marr Age Union 19388 1 0 6 1 0 0 0 45 1 57 0 49898 2 0 12 0 0 0 0 33 1 51 1 28219 0 3 12 1 0 0 0 12 1 30 0 83601 0 5 17 0 0 1 0 18 1 41 0 29736 0 4 8 0 0 1 0 47 1 61 1 5023
An automobile assembly line operation has a scheduled mean completion time of 2.2 minutes. Because of the effect of completion time on both preceding and subsequent assembly operations, it is important to maintain the 2.2 minute mean completion time. A random sample of 45 assemblies resulted in the completion times shown in the
1. Which of the following is not a characteristic of the normal probability distribution? a. The mean, median, and the mode are equal b. The mean of the distribution can be negative, zero, or positive c. The distribution is symmetrical d. The standard deviation must be 1 e. None of the above answers is correct. 2. Whic