Explore BrainMass
Share

# Analysis of Variance

### Solve the following one-way ANOVA problems

See attached for proper formatting Assignment 2: Mixed Problems 1. In a one-way ANOVA, if the test is conducted and the null hypothesis is rejected, what does this indicate? (2 pts) A. All the population means are equal B. At least one of the population means are different C. The normal distribution should b

### Using an ANOVA: Bumper Test

Question: In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. The research question being asked in this case is as follows: Are the mean crash damages the same for

### Explanation: ANOVA and hypothesis testing of means

Give an example of how you could/would apply a hypothesis test using ANOVA to compare more than two independent population means? State the null and alternate hypotheses in both words and symbols.You do not need to complete the entire five step process using actual numbers.

### Statistics: ANOVA and P-Value

1. Discuss the concept of ANOVA and its applicability in the workplace. 2. Define the following terms related to an ANOVA in terms that the everyday person can understand, and then discuss why you would perform an ANOVA rather than a t-test. + Sum of squares among (SSA) + Sums of squares error (SSE) + Means square among

### Two way ANOVA for catalysts delivery time

Oxnard Petro, Ltd., has three suppliers of catalysts. Orders are placed with each supplier every 15 working days, or about once every 3 weeks. The delivery time (days) is recorded for each order over 1 year. Are the main effects significant? Is there an interaction? Deliveries2 Supplier 1 Supplier 2 Supplier 3 Qtr 1 12 10 16

### ANOVA: Can the null hypothesis be rejected?

For the following data from independent samples, could the null hypothesis that the population means are equal be rejected at the 0.05 level? Use the data provided in the attached files.

### ANOVA: finding and interpreting the p-value

In a one-way ANOVA, there are three independent samples, with n1 = 8, n2 =10 and n3 = 7. The calculated f-statistic is f = 3.95. At the 0.05 level of significance, what conclusion would be reached? Based on the F distribution tables, what is the most accurate statement that can be made about the p-value for this test?

### ANOVA: Hypothesis tests and the ANOVA table

Cris Turlock owns and manages a small business in San Francisco, CA. The business provides breakfast and brunch food, via carts parked along sidewalks, to people in the business district of the city. Being an experienced businessperson, Cris provides incentives for the salespeople operating the food carts. This year, she pl

### Two way ANOVA..

In a two-way ANOVA experiment, factor A is operating on 3 levels, factor B is operating on 2 levels, and there are 2 replications per cell. If MSA / MSE = 5.35, MSB / MSE = 5.72 and MSAB / MSE = 6.75, and using the 0.05 level of significance, what conclusions would be reached, regarding the respective null hypotheses for this e

### Evaluating the Effectiveness of the Blocking Variable

Three racquetball players, one from each skill level, have been randomly selected from the membership list of a health club. Using the same ball, each person hits five serves, one with each of five racquets, and using the racquets in a random order. Each serve is clocked with a radar gun, and the results are shown here. With pla

### ANOVA: degrees of freedom and F statistic

Please see attached file for full question and ANOVA table. 1. For each of the following situations, state how large the F statistic needs to be for rejection of the null hypothesis at the 5% level. Sketch each distribution and indicate the region where you would reject. a). The main effect for the first factor in a 3 x 5

### Nonparamettic ANOVA for Sample Mean

The National Turkey Association wants to experiment with three different feed mixtures for very young turkeys. Since no experience exists regarding the three mixtures, no assumptions can be made about the distribution of weights. The Kruskal-Wallis test must be used to test whether the turkeys are equal in weight after eating th

### ANOVA for Bumper Test for 3 Types of Autos

In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Research question: Are the mean crash damages the same for these three vehicles? State the decision rule for &#

### ANOVA table completion

Given the following partial ANOVA Table: I do not understand the statistical process for completing a partial ANOVA table as indicated below. I would like a step by step process. source of variation Sum of Squares df Mean Square F value Treatment 3

### Requirements for an ANOVA test

Describe the requirements that must be met before an ANOVA test can be used. Discuss what the researcher should do if one of these requirements is not met.

### Question about Analysis of Variance Problem

You can find the full problem about sampling flights in the attached worksheet. For the time being, the air traffic control system in the United States is run by the federal government. Some people would like to change this, arguing that the air traffic control system should be part of the private sector. Among the argumen

### Two-Way Analysis of Variance

An experimenter has investigated the effects of cigarette smoking on learning. Two levels of the smoking variable were used (smoked, did not smoke). There are also two levels of the learning variable (intentional learning and incidental learning). 1) Practice the two-way between-subjects ANOVA on these data. 2) Interpre

### Test the population mean and then interpret a one-way analysis of variance (ANOVA)

1. You want to prove that a population mean is not 7. Data is ratio and a large sample size will be used (n = 225). When the sample is done the sample mean is computed to be 7.2 and the sample standard deviation is 1.5. Test the hypothesis using an alpha of 5%. Use formal hypothesis testing and compute the p-value. 2.

### ANOVA

In a bumper test, three types of autos were deliberately crashed into a bar resulting damage (in dollars) was estimated. Five test vehicles of each type results shown below. Research question: Are the mean crash damages the vehicles? Crash Damage (\$) Goliath Varmint Weasel 1,600 1,290 1,090 760

### ANOVA

In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Research question: Are the mean crash damages the same for these three vehicles? Crash Damage (\$) Goliat

### ANOVA Analysis of Cigarette Smoking on Learning

An experimenter has investigated the effects of cigarette smoking on learning. Two levels of the smoking variable were used (smoked, did not smoke). There are also two levels of the learning variable (intentional learning and incidental learning). (1) Practice the two-way between-subjects ANOVA on these data. (2) Inte

### Using ANOVA to Test Productivity Levels

The results shown below are mean productivity measurements (average number of assemblies completed per hour) for a random sample of workers at each of three plants. The research question is: Are the mean hourly productivity levels the same for workers in these three plants? Please compute the solution in an Excel document or ano

### Hypothesis

The values in the table are measured maximum breaths of male Egyptian skulls from time periods. Changing in head shape over time suggest that interbreading occurred with immigrant populations. Use a 0.05 level significance to test the claim that the different time periods do not all have the same mean. 4000BC 1850BC

### A one-way, independent-samples ANOVA test of equality of the population means

Please see the attached file. Question: Sample size Sample mean Sample variance 66 211.2 2862.1 119 198.6 2122.9 95 214 2125.4 110 217.9 2043.7 will do a one-way, independent-samples ANOVA test of equality of the population means, which uses the statistic

### ANOVA to find F

Use this table to complete the following questions: Drug A Drug B Drug C 2 10 6 4 5 5 5 6 3 5 6 6 4 6 ? The value of F required for significance at the alpha equal .05 level of significance is:

### ANOVA to Compute SS

Use this table to complete the following questions: Drug A Drug B Drug C 2 10 6 4 5 5 5 6 3 5 6 6 4 6 ? Compute the SS within:

### ANOVA to Compute SS for Drug A, B and C

Use this table to complete the following questions: Drug A Drug B Drug C 2 10 6 4 5 5 5 6 3 5 6 6 4 6 ? Compute the SS total:

### Detailed Explanation to Statistics - ANOVA

Use this table to complete the following questions: Drug A Drug B Drug C 2 10 6 4 5 5 5 6 3 5 6 6 4 6

### ANOVA - The table below shows the number of HDTVs sold at three chain stores owned by the same company in the four quarters of the last fiscal year. Process the data by Excel using its two-way ANOVA without replication program. ... [See the attached questions file.]

ANOVA - 1) The table below shows the number of HDTVs sold at three chain stores owned by the same company in the four quarters of the last fiscal year. Process the data by Excel using its two-way ANOVA without replication program. ... [See the attached questions file.]

### Analyzing One Way ANOVA: Supermarket chain and their brand of potato chips

Consider a large chain of supermarkets that sell their own brand of potato chips in addition to many other name brands. Management would like to know whether the type of display used for the store has any effect on sales. Because there are four types of displays being considered, management decides to choose 24 similar stores to