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Regression Analysis

Correlation and Regression

Applicants for a particular job that involves extensive travel in Spanish speaking countries, must take a proficiency test in Spanish. The sample data below was obtained in a study of the relationship between the numbers of years applicants have studies Spanish and their score on the test. # of Years (χ) 3 4 4 2 5 3

Manatees

Manatees are large sea creatures that live in the shallow water alone the coast of Florida. Many manatees are injured or killed each year by powerboats. Here are the data on manatees killed and powerboat registration (in thousands of boats) in Florida for the period 1984 to 1990. Year Powerboats Manatees Killed γ

Linear regression and correlation

What is realtionship between the amt spent per wk on food and the size of the family? Do larger families spend more on food? A sample of 10 families in the chicago are revealed the following figures for family size and the amount spent on food per week. Chart attached

Interpretation of EXCEL regression analysis

Following is a portion of the Excel output for a regression analysis relating maintenance expense (dollars per month) to usage (hours per week) for a particular brand of computer terminal. (see table in attachment) a. Write the estimated regression equation. b. Use a t test to determine whether monthly maintenance expens

Estimated Regression Equation

The typical household income and typical home price for a sample of 18 cities follows (see attachment - data are in thousands of dollars). PART A: a. Use these data to develop an estimated regression equation that could be used to estimate the typical home price for a city given the typical household income. b. Compute r2 [

Develop a scatter diagram for this data. Develop the estimated regression equation by computing the values of b (0) and b (1). Use the estimated regression to predict the value of y when x = 4

Given are five observations for two variables x and y. (see attached for details) x y 1 3 2 7 3 5 4 11 5 14 A. Develop a scatter diagram for this data. B. What does the scatter diagram in part A indicate about the relationship between the two variables? C. Try to aproximate the relationship between x and y by drawin

Need help structuring problem and solving

Results of multiple regression for Defect Summary measures Multiple R 0.9383 R-Square 0.8803 Adj R-Square 0.8612 StErr of Est 7.2326 ANOVA Table Source df SS MS F p-value Explained 4 9621.5292 2405.3823 45.9828 0.0000 Unexplained 25 1307.7628 52.3105 Regre

Statistics

5. A product manager at Proctor & Gamble seeks to determine whether her company should market a new brand of toothpaste, called Tim's of Massachusetts. If the new brand succeeds, then P&G estimates that it would earn $2,000,000 in NPV. If Tim's fails, then the company expects to lose approximately $800,000 in NPV. If P&G decides

Regression Analysis

Please see attached there are 3 problems. I have added the instructions for #3

Checker's Pizza Statistical Analysis

The files attached include results from an experiment aimed at determining whether the training program and/or bonus incentive has an effect on employee tenure. ID: Sequential identification numbers assigned to employees included in the study Training: 1=training given to store manager 0=no training given Bon

Case Problem: Government (State) Spending And Student Achievement

Is the educational achievement level of students related to how much the state in which they reside spends on education? In many communities this important question is being asked by taxpayers who are being asked by their school districts to increase the amount of tax revenue spent on education. In this case, you will be asked t

Rio River Railroad Statistical Analysis

The Rio-River Railroad, headquartered in Santa Fe, New Mexico, is trying to devise a method for allocating fuel costs to individual railroad cars on a particular route between Denver and Santa Fe. The railroad thinks that fuel consumption will increase as more cars are added to the train, but it is uncertain how much cost should

Regression Analysis

Please see the attached chart and answer the following questions: 1. Find the missing parts of the output (parts a-g). 2. Determine the standard error of the regression model. 3. Is the relationship between y and x1, holding x2 constant, significantly positive? State the hypothesis to be tested, the decision rule, the

4288-1-2 (only 1 and 2)

1. The attached spreadsheet details the results of a Cobb-Douglas production function estimation for electricity production. Electricity is produced using heat (fuel), capital, and labor. (a) Write out the complete model. (b) What type of returns to scale does electricity production exhibit? (c) Calculate the marginal produ

Why is this statement true or false?

The standard error of the estimate can be used to determine a range within which the independent X variables can be predicted with varying degrees of statistical confidence based on the regression coefficients and the value for the Y variable. Why is this statement true or false?

Regression Equation

Plants emit gases that trigger the ripening of fruit, attract pollinators, and cue other physiological responses. The hydrocarbons emitted by the potato plant were measured and compared to the plant weight. Weight (x) was measured in grams and hydrocarbon emissions (y) were measured in hundreds of nanograms for 11 plants. Let

Hypothesis testing

I am currently working on a problem that has four parts, and in question 1 and 3 I am doing ok. I completed the scatter plot using excel and also have completed the least squares regression model. the part were I am confused is in parts b and c of question 2 and question 4.

This is an example of the basic repeated measures experiment where the study is a completely randomized design (treatments are randomly assigned to experimental units with no blocking factors), and then 4 measurements are made on each unit over time. The tool used for the analysis was SAS.

In a concept formation study, 12 subjects were randomly assigned to three different experimental conditions and then given four trials in the solution of a problem. For each trial, the number of minutes taken to solve the problem was recorded. The results were as follows: (See the attached file for data table) a) State a

3929-stats

Subject: Multivariate model Details: I need to know how to report the findings from this type of model

Analysis of statistical data using microsoft Excel

Making sense of the data in Excel, in order to predict the two most influential , and the two least influential parameters. The enclosed table shows details from a sample of students. All students had to jump as high as possible, the results were measured in CMs. Out of all the personal details, Genda, Height, weight, B

Cost estimation & multiple regression

Cost estimation and using multiple regression: University Hospital has prepared a schedule of estimated overhead costs for its blood test unit for the coming year on the assumption that production will be 80,000 tests for the year. Costs have been classified as fixed or variable, according to the controller's judgment. See a