Purchase Solution

Testing if four population means are the same or different

Not what you're looking for?

Ask Custom Question

I need help with testing to see if four population means are the same or different. Assume the populations are normally distributed and have equal variances. Use the formal hypothesis-testing model. State the conclusion in statistical terms and in conversational English. Use the ANOVA table below.

ANOVA
Source of Variation SS df MS F P-value F crit
Between Groups 900 3 300 3.00 0.0480
Within Groups 2500 25 100

Total 3300

Purchase this Solution
Solution Summary

The solution tests is four population means are the same or different. The conclusion is stated in statistical terms. An ANOVA analysis is used.

Solution Preview

Following is the ANOVA table.

Source of Variation SS df MS F P-value F-crit
Between groups 900 3 300 3.00 0.0480 2.99
Within groups 2500 25 100
Total 3300 28

Null Hypothesis:

H0 : 1 = 2 = ...

Purchase this Solution
Free BrainMass Quizzes
MS Word 2010-Tricky Features

These questions are based on features of the previous word versions that were easy to figure out, but now seem more hidden to me.

Academic Reading and Writing: Critical Thinking

Importance of Critical Thinking

Motivation

This tests some key elements of major motivation theories.

Business Ethics Awareness Strategy

This quiz is designed to assess your current ability for determining the characteristics of ethical behavior. It is essential that leaders, managers, and employees are able to distinguish between positive and negative ethical behavior. The quicker you assess a person's ethical tendency, the awareness empowers you to develop a strategy on how to interact with them.

IPOs

This Quiz is compiled of questions that pertain to IPOs (Initial Public Offerings)

View More Free Quizzes
Related BrainMass Solutions

  • Hypothesis Testing for Four Population Means with ANOVA Tables

    205980 Hypothesis Testing for Four Population Means with ANOVA Tables 1) Test to see if four population means are the same or different. Assume the populations are normally distributed and have equal variances.

  • 3 Statistics Problems

    Test to see if four population means are the same or different. Assume the populations are normally distributed and have equal variances. Use the formal hypothesis-testing model.

  • Statistics - Hypothesis Testing - Anova

    A hypothesis test using an F statistic can determine whether three or more sample means are statistically significantly different from each other, otherwise one may conclude that they are from the same population.

  • ANOVA and Non-Parametric Testing

    ANOVA testing is used to test if the means of three or more populations are any different from each other or not. Note that for two or fewer population, a t-test or z-test should be used.

  • ANOVA Vs. "t" Test or a "z" Test

    entire set of sample means suggest that the sample was drawn from the same general population.

  • Analysis of Variance - ANOVA Problem

    48233 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.

  • ANOVA to test the equality of means

    A hypothesis test using an F statistic can determine whether three or more sample means are statistically significantly different from each other, otherwise one may conclude that they are from the same population.

  • Probability, hypothesis testing and confidence intervals

    Fail to reject the null hypothesis and conclude the means are the same. D. Fail to reject the null hypothesis and conclude the means are different.

  • Hypothesis testing procedures and test classifies

    A company manufactures and markets automobiles in two different countries. You want to know if the gas mileage is the same for vehicles from both facilities. There are samples of 45 units from each facility.

View More Related Solutions