Hello, I was wondering if you could help me solving and understanding my homework step by step in Statistics for managers course using Microsoft Excel 2011 with PHStat add-in. The homework covers chapter 13 and 14 of the book which is about Linear Regression Models. It is from the textbook, one on page […]
In a study of proctored and non proctored tests in an online Intermediate Algebra course, researchers obtained the data for test results given below. With a 98% level of confidence determine if it seems to make a difference whether or not the online tests
1. Assume a significant level of Q = 0.05 and use the given information for the following:a. State a conclusion about the null hypothesis.(Reject Ho or fail to reject Ho.)b. Without using technical terms, state a final conclusion that addresses the original claim.Original Claim: Women have heights with a standard deviation equal to 5.00 cm. […]
Multiple regression analysis is widely used in business research in order to forecast and predict purposes. It is also used to determine what independent variables have an influence on dependent variables, such as sales. Sales can be attributed to quality, customer service, and location. In multiple regression analysis, we can determine which independent variable contributes the most to sales; it could be quality or customer service or location. Now, consider the following scenario. You have been assigned the task of creating a multiple regression equation of at least three variables that explains Microsofts annual sales. Use a time series of data of at least 10 years. You can search for this data using the Internet. Before running the regression analysis , predict what sign each variable will be and explain why you made that prediction. Run three simple linear regressions by considering one independent variable at a time After running each of the three linear regressions, interpret the regression. Does the regression fit the data well? Run a multiple regression using all three independent variables. Interpret the multiple regression. Does the regression fit the data well? Does each predictor play a significant role in explaining the significance of the regression? Are some predictors not useful? If so, did you consider removing those and rerunning the regression? Are the predictors related too significantly to one another? What is the coefficient of correlation “r”? Do you think this “r” value suggests a strong correlation among the predictors ( the independent variables? Submit your answers in a two- to three-page Word document. http://office.microsoft.com/en-us/excel-help/use-the-analysis-toolpak-to-perform-complex-data-analysis-HP010342762.aspx http://www.microsoft.com/investor/reports/ar11/financial_review/balance_sheets.html USE EXCEL
Part 1: Observation Observing a classroom environment can provide much needed detail and understanding of students’ learning needs and continued progress. For this field experience, observe a K-8 classroom during a math lesson. During your observation of the lesson, complete the “Math Observation” template. Speak with your mentor teacher and, provided permission, use any […]
MAT540Week 4 HomeworkChapter 152. The manager of the Carpet City outlet needs to make an accurate forecast of the demand for SoftShag carpet (its biggest seller).If the manager does not order enough carpet from the carpet mill,customers will buy their carpet from one of Carpet City’s many competitors. The manager has collected the following demand […]
Statistics for Decision Making final exam1. Question: (TCO 9) The annual Salary of an electrical engineer is given in terms of the years of experience by the table below. Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 45 years of experience. Round to the […]
Math 450 3rd week Quiz 2st supplement. You must show the work in order to justify the answers. (Total 100) 1. Given the Function: a. Find the domain of b. Find the x values for which is discontinuous. c. Find d. Find 2. Find the derivatives .( Do not simplify.) […]
I attached the case and the question and it is already solved. You need to explain the July and August hospital services. Also you need to compare the allocated budget to the actual budget and create a Bar chartthat shows the comparison. And determine which depts are over allocated and which are under allocated […]
For this practical application assignment, you will assume the role of two different managers to recommend a course of action by applying hypothesis testing to business decisions. For the first scenario, you work for a regionally based magazine publisher, and for the second, you have just been hired away from your buyer’s position at Macy’s […]
