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# Analysis of Variance

### Solving an Analysis of Variance Problem

In what business situations would it be appropriate to utilize a one-way ANOVA?

### At the .05 significance level, can we conclude there is a difference in the mean amounts charged per purchase on the three cards?

Department store accepts three types of credit cards, MasterCard, Visa, and their own store card. Charges are normally distributed. A random sample of 18 credit card purchases included 6 MasterCard, 7 Visa, and 5 store charges. The total sum of squares calculated was 7,114, and the sum of squares within groups (SSE) was 3776.033

### Analysis of variance and normal distribution

Department store accepts three types of credit cards, MasterCard, Visa, and their own store card. Charges are normally distributed. A random sample of 18 credit card purchases included 6 MasterCard, 7 Visa, and 5 store charges. The total sum of squares calculated was 7,114, and the sum of squares within groups (SSE) was 3776.033

### Problem with statistical method type

What statistical method is used to accept or reject the null hypothesis in determining if outsourcing is always beneficial? Please explain your reasons for choosing the selected method in detail and cite references (if any). Also, explain the variables for which data will be collected. For each variable, identify the level

### Chi Square or ANOVA or T-Test(s)

I have collected data for my pschology experiment and I am uncertain which analysis test to run. Although they will all be a challenge since this is my first year of University and we haven't done much stats work yet. Participants were shown an image and asked to choose what they thought the people in the picture were likely

### Solving ANOVA Problems

Three supermarket chains in the Denver area each claim to have the lowest overall prices. As part of an investigative study on supermarket advertising, the Denver Daily News conducted a study. First, a random sample of nine grocery items was selected. Next, the price of each selected item was checked at each of the three chains

### Scatter diagrams, coefficients of correlation and determination

A car dealership wants to study the relationship between the age of a car and the selling price. Below is a sample of 12 cars: Car Age(years) Selling Price (\$000) 1 9 8.1 2 7 6 3 11 3.6 4 12 4 5 8 5 6 7 10 7 8

### Analysis of Variance Problem

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 5 executives from each of three industries. At the .05 significance level, can the manager conclude there is a difference in the mean number of

### Statistics: Hypotheses and Decision Rules

Sample information is below. Test the hypothesis at the .05 significance level that the treatment means are equal. Treatment One Treatment Two Treatment Three 9 13 10 7 20 9 11 14

### Hypothesis Testing, p-Value, Levels of Significance, ANOVA and Correlation Coefficient

5) Suppose the following table shows the number of colds 7 different people got during the typical cold season based on the number of times they washed they washed their hands per day during the cold season. Calculate the correlation coefficient and interpret its meaning as applied to this problem. In addition, using a hypothe

### Samples and anova tables

Given the following sample information, test the hypothesis that the treatment means are equal at the .05 significance level. (file is attached) a. State the null hypothesis and the alternate hypothesis. b. What is the decision rule? c. Compute SST, SSE, and SS total. d. Complete an ANOVA table. e. S

### Diet Statistical Analysis

A physician who specializes in weight control has three different diets she recommends. As an experiment, she randomly selected 15 patients and then assigned 5 to each diet. After three weeks the following weight losses, in pounds, were noted. At the 0.05 significance level, can she conclude that there is a difference in the mea

### Calculation of ANOVA or T-test

I've done a study for my course. It involved showing participants a picture with a context statement above it. There are two conditions; 1=picture with a negative statement 2=picture with a neutral statement. Participants are then asked to select what they think the boys in the picture are about to do. There is a list of o

### ANOVA

A. The number of shares of Icom, Inc. turned over during a month, and the price at the end of the month are listed in the following table. Also given are the estimated Y' values. Turnover (thousands of shares) X Y(actual price) Y'(estimated price) 4 \$2

### Realestate data which reports information on the homes sold in the Venice, Florida...

Refer to the Realestate data which reports information on the homes sold in the Venice, Florida, are last year. At the .05 significance level, is there a difference in the mean selling price of the homes among the five township? X1 = SELLING PRICE IN \$0.00 X2 = # OF BEDROOMS X3 = SIZE OF THE HOME IN SQ FT X4 = POOL (1 Y

### ANOVA Summary Table for Treatments

Complete the ANOVA summary table shown here. Source of Sum of Degrees of Mean Square F Observed Variation Squares Freedom Between 150.2 9 Treatments Error 200.7 (Within Treatments) Sums of 3

### ANOVA - Bottle Design

1. ANOVA EXERCISES EXERCISE 10.18-Bottle Design (One Way ANOVA). Use Table 10.10. Complete the exercise from the data given and answer all of the questions in a written summary. (Cut and paste any EXCEL data that you wish to discuss). A consumer preference study involving three different bottle designs (A,B, and C) for t

### How do I do a two way Anova test and analyze the data?

Please view the attachment which more clearly defines my problem. --- Choose two sets of hypothesis using ANOVA you can simulate your own data (n=20) Sample size =288. Ho=u2=u3 where u means population. H1:u1#u2#u3. where u means population. I am trying to figure out how to do this problem. Test two sets of hypothesis

### ANOVA, Hypothesis Tests and F-Tests

(See attached file for full problem description with proper symbols and diagrams) --- 2. What is the critical F value for a sample of four observations in the numerator and seven in the denominator? Use a one-tailed test and the .01 significance level. 3. The following hypotheses are given. A random sample of eight

### ANOVA Questions

Here are some questions that I am asking in general to using ANOVA testing. 1) What are three lessons learned relative ANOVA and Nonparametric tests? 2) What concepts and analytic tools will you be able to use in your workplace ?

### Describes how to solve problem using Analysis of Variance

A stock analyst wants to determine whether there is a difference in the mean rate of return for three types of stock: utility, retail, and banking stocks. The following sample information is collected. Rates of Return Utility Retail Banking 14.3 11.5 15.5 18.1 12.0 12.7 17.8 11.1 18.2 17.3 11.9 14.7 19.5 1

### Experimental Design and Analysis

You are a training manager for a manufacturing firm and have three new training programs to assess. You assign, at random, equal numbers of employees to each of the training programs in order to determine which program is most efficient. How might you go about analyzing the results? I am trying to decide which test to use?

### Determine the Least Squares Equation and Estimate

The numbers of bank failures for the years 1997 through 2001 are given below. Determine the least squares equation and estimate the number of failures in 2003. Year Code Number of Failures 1997 1 79 1998 2 120 1999 3 138 2000 4 184 2001 5 200 Q3 3. The following table gives the annual amount of scrap produced by Mach

### Water Consumptions Purpose Summary

Between 1981 and 1991, water use in Canada increased for some purposes and decreased for others. The following table provides a summary. Water consumption(millions of m cubed) category of use 1981 1986 1991

### Are the Three Treatment Means Equal?

Given the following sample information, test the hypothesis that the treatment means are equal at the .05 significance level. a. State the null hypothesis and the alternative hypothesis. b. What is the decision rule? c. Compute SST, SSE, and SS total. d. Complete an ANOVA table. e. State your decision regarding the null h

### Difference in mean number of hours spent at terminal

The manager of a computer software company wishes to study the number of hours top executives spend at their computer terminals by type of industry. The manager seleceted 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

### ANOVAS

This is the assignment it is a group assignment. Each team member will provide research on Job Satisfaction. Again, use the Business Source Elite Database in the Cybrary and write up a short 1 page report on the topic. Each team member should use different sources. Each team member is to do the following: 1. Research th

### ANOVA Problem

When we want to test two samples to determine if it is likely that the population means (estimated by the sample means) are different, we typically use a t-test. If the samples are large, we can also use a z-test. (Note that the formulas for computing s, t and/or z in the case of a two-sample test are different than the formula

### Testing Hypothesis at 0.05 Level

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 8 3 3 11 2 4 10 1 5

### Two anova tests

Perform two ANOVAs using the attached files. The first data set, the tab labeled "Vaccines", is the percent of infants who are vaccinated against certain diseases. The states are grouped by regions (there are 9 regions altogether). Test whether the vaccination rates are the same in all 9 regions. The second data set, the t