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# Analysis of Variance

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### Several ANOVA problems

1. Jointsoft is a great over-the-counter arthritis medication, but who will ever know about it? Unfortunately, many people with arthritis tend to be elderly and rather immobile, so advertisers of arthritis medications face limitations in ways to get their messages across. Currently, their best modes of advertisement are commerci

### This posting provides hypothesis testing for ANOVA

What is an ANOVA hypothesis test? When is it used? Ask a question that would force me to do an ANOVA hypothesis test.

### Statistics - Use of Kruskal-Wallace

I need some examples of how I would use ANOVA testing and Kruskal-Wallace testing in a small computer business. The computer business sells and repairs computers, sells some computer parts, and does consulting work.

### Business Uses of ANOVA

Analysis of variance (ANOVA) is used to determine if there is a difference between the means of different populations. This is an example from a student in Prescott Arizona. A company was trying to sell her the feed they produced by claiming that if her hens ate their feed, the hens would produce more eggs. They offered her a s

### To complete ANOVA table by calculating sum of squares of error, treatment and F-test

To complete ANOVA table by calculating sum of squares of error, treatment and F-test. See attached file for full problem description.

### To find F-test and p-value

Can you please help me solve the 3 problems in the attached document?

### ANOVA: Testing Three Treatment Means

The following is sample information. Test the hypothesis at the .05 significance level that the treatment means are equal. Treatment 1.... Treatment 2......Treatment 3 9...............................13..................10 7...............................20...................9 11............................14.............

### Hypothesis test and ANOVA of 3 treatements

The following is sample information. Test the hypothesis that the treatment means are equal. Use the .05 significance level. Treatment 1 Treatment 2 Treatment 3 8 3 3 6 2 4 10 4 5 9

### ANOVA: Description and Application

I need some examples on how ANOVA is used in different circumstances like work, personal life, education etc.

### One-way ANOVA and Post-Hoc Comparison's test

A random selection of accounting firms from three regions is taken and they are asked to state the starting salary for a new accounting graduate. Do a one-way ANOVA to analyze these data using a 1% level of significance: South Northeast West --------- ----------- --------- \$30500 \$41000 \$3

### ANOVA METHOD

When would it be useful to the business decision-making process to utilize the ANOVA method of hypothesis testing? Please provide an example, preferably one that would apply to some type of work experience.

### ANOVA Test on Mean Income of Families

Please answer the question below. Please submit your solution as an Excel attachment and be sure to show ALL calculations that you use to prepare the ANOVA table. A real estate developer is considering investing in a shopping mall on the outskirts of Atlanta, Georgia. Three parcels of land are being evaluated. A random sample

### To test equality of performance of the two investments, using the 5% level of significance and analysis of variance

An article in the Wall Street Journal compares the performance of the largest Janus fund with the performance of the S&P 500. The comparison is achieved by assuming that\$10,000 was invested both in the Janus fund and in the S&P 500. Several months after the investments are made, a random sample of daily portfolio values are draw

### Use a .05 significance level to test the null hypothesis

The head injury data are given below. Use a 0.05 significance level to test the null hypothesis that the different weight categories have the same mean. Do the data suggest that larger cars are safer? Subcompact 681 428 917 898 420 Compact 643 655 442 514 525 Midsize 469 727 525 454 259 Full-size 384 656 602 687 360

### Find the null/alternative hypothesis, and compute values

Given the following sample information, test the hypothesis that the treatment means are equal at the .05 significance level. Treatment 1: 8,11,10 Treatment 2: 3,2,1,3,2 Treatment 3: 3,4,5,4 a. state the null hypothesis and the alternative hypotheseis b. what is the decision rule? c. Compute sst, sse, and ss total d.

### Work Through an ANOVA Test

Work through as an ANOVA calculation. Work through an ANOVA test to compare the means of three or more groups of data. If Use data from our Unit 1 data set. Remember to also ensure that you begin by stating the null and alternative hypotheses. Your final answer should point out if the null is confirmed or rejected and why. Ple

### Testing of hypothesis - ANOVA

A study investigated the perception of corporate ethical values among individuals specializing in marketing. Using a=.05 and the following data (higher scores indicates higher ethical values) test for significant differences in perception among the three groups. Marketing Marketing Adve

### Anova

What are the conditions that permit us to use ANOVA? Three conditions.

### 5 step hypotheses and ANOVA tables

The manager of a computer software company wishes to study the number of hours senior executives spend at their desktop computers by type of industry. The manager selected a sample of five executives from each of three industries. At the .05 significance level, can she conclude there is a difference in the mean number of hours

### ANOVA Output of Shift Workers

Suppose a firm evaluates the productivity of the three shifts of workers who work in their factory. Each shift's performance is measured based on the amount of output that is produced during the shift - day, evening, or swing shift. Based on these ratings presented in the table below, produce an ANOVA table and determine if the

### Business-related ANOVA examples

Analysis of variance (ANOVA) is used to determine if there is a difference between the means of different populations. This is an example from a student in Prescott, Arizona. A company was trying to sell her the feed they produced by claiming that if her hens ate their feed, the hens would produce more eggs. They offered her a s

### Business Problem Solved using ANOVA

Please help finding THREE SEPARATE SETS OF DATA that pertain to a business research issue, problem, or opportunity facing an organization. I was thinking about INS Immigration service, but I don't know what to do, can you help me with this?? Identify data that can be used in an ANOVA test. Describe the research issue, p

### Classic One-Way ANOVA

Hi, This is very confusing to me and I feel lost, can you help me find the answers to these questions: 1. A professor had students in a large marketing class rate his performance as excellent, good, fair, or poor. A graduate student collected the ratings and assumed the students that the professor would not receive them u

### ANOVA

An ANOVA test was conducted with respect to the population mean. The null hypothesis was rejected. This indicates 1. There were too many degrees of freedom. 2. There is no difference between the population means. 3. There is a difference between at least two population means. 4. A larger sample should be selected. 5. None o

### Answer to student's question about: Analysis of variance

Chapter 12, Exercise 12, Page 405, Lind Text Given the following sample information, test the hypothesis that the treatment means are equal at the .05 significance level. Treatment 1 Treatment 2 Treatment 3 3 9

### Please create ANOVA test in Excel for the attached data.

Please use the information in the attached Word document table to create an ANOVA test. Then, perform an ANOVA on your data using any method of computation. Note: Methods of computation could include the usage of Excel - see below for Hypotheses: Let's compare 3 companies; annual stock performance to determine if the v

### Significance Level: Time Spent at Desktop and Other Scenarios

1. The manager of a computer software company wishes to study the number of hours senior executives spend at their desktop computers by type of industry. The manager selected a sample of five executives from each of three industries. At the .05 significance level, can she conclude there is a difference in the mean number of hour

### Find the best model

We are predicting the number of units sold for a local factory that produces snowmobiles. The available annual data are the expenses (in \$000), the number of employees, and the rainfall (in in.). Find the best model using the following table. Year Expenses #Employees Rainfall Units Sold 1987 5300

### Analysis of Variance Testing

Function In-house Outsource Art Direction 100,000.00 500,000.00 Graphic Design 350,000.00 500,000.00 Print Buy/Design & Production 100,000.00 250,000.00 Production

### Differences between hypotheses testing methods

Describe in detail the differences in ANOVA and the five-step hypothesis testing method. 1. State hypothesis and alternate. 2. Level of significance 3. Identify test statistic 4. Formulate decision rule 5. Make the decision to accept or reject null hypothesis