• 100% Satisfaction Guarantee

Sandhya, Tutor
Category: Homework
Satisfied Customers: 3709
Experience:  I have several years of teaching experience.
14910578
Sandhya is online now

# Need help with statistic problems ANOVA assumes equal variances

### Customer Question

Need help with statistic problems? ANOVA assumes equal variances within each treatment. A) True B) False 2 Comparison of c means in one-factor ANOVA is the same as using c repeated t-tests. A) True B) False 3 Hartley's test measures the equality of the means for several groups. A) True B) False 4 If you have 4 factors (call them A, B, C and D) in an ANOVA experiment with replication you could have 4 different two-factor interactions. A) True B) False 5 Use the following scenario to answer questions 5 to 12. Sound engineers studied factors that might affect the output (in decibels) of a rock concert speaker system. The desired level of significance was α = .05. The results of their ANOVA tests are shown.The number of positions tested was A) 1 B) 2 C) 3 D) 4 6 The number of amplifiers tested was A) 1 B) 2 C) 3 D) 4 E) 24 7 The number of observations was A) 16 B) 19 C) 23 D) 24 8 The number of observations per cell was A) 1 B) 2 C) 3 D) 4 9 The effect of amplifier was A) significant. B) insignificant. C) borderline. 10 The effect of position was A) significant. B) insignificant. C) borderline. 11 The F statistic for amplifier was A) 10.16 B) 9.90 C) 5.72 12 The interaction was A) significant. B) insignificant. C) borderline. Use the following scenario to answer questions 13 to 15. Three randomly-chosen pieces of four types of PVC pipe of equal wall thickness are tested to failure to determine the burst strength (in pounds per square inch) under three temperature conditions, yielding the results shown below. 13 Which test would be appropriate? A) two-factor ANOVA with replication. B) one-factor ANOVA. C) dependent (paired samples) t-test. D) two-factor ANOVA no replication. 14 Total degrees of freedom would be A) 19 B) 12 C) 35 D) 59 15 An interaction test would be appropriate. A) True. B) False

Optional Information:
State/Country relating to Question: United States

I am in need of help don't know statistics
Submitted: 4 years ago.
Category: Homework
Expert:  Sandhya replied 4 years ago.
Do you still need help with these problems?

Let me know.

Thanks
Customer: replied 4 years ago.
Expert:  Sandhya replied 4 years ago.

Thanks
Customer: replied 4 years ago.

1.) ANOVA assumes equal variances within each treatment. A) True B) False

2.) Comparison of c means in one-factor ANOVA is the same as using c repeated t-tests. A) True B) False

3 Hartley's test measures the equality of the means for several groups. A) True B) False

4 If you have 4 factors (call them A, B, C and D) in an ANOVA experiment with replication you could have 4 different two-factor interactions. A) True B) False

5 Use the following scenario to answer questions 5 to 12. Sound engineers studied factors that might affect the output (in decibels) of a rock concert speaker system. The desired level of significance was α = .05. The results of their ANOVA tests are shown.The number of positions tested was A) 1 B) 2 C) 3 D) 4

6 The number of amplifiers tested was A) 1 B) 2 C) 3 D) 4 E) 24

7 The number of observations was A) 16 B) 19 C) 23 D) 24

8 The number of observations per cell was A) 1 B) 2 C) 3 D) 4

9 The effect of amplifier was A) significant. B) insignificant. C) borderline.

10 The effect of position was A) significant. B) insignificant. C) borderline.

11 The F statistic for amplifier was A) 10.16 B) 9.90 C) 5.72

12 The interaction was A) significant. B) insignificant. C) borderline. Use the following scenario to answer questions 13 to 15. Three randomly-chosen pieces of four types of PVC pipe of equal wall thickness are tested to failure to determine the burst strength (in pounds per square inch) under three temperature conditions, yielding the results shown below.

13 Which test would be appropriate? A) two-factor ANOVA with replication. B) one-factor ANOVA. C) dependent (paired samples) t-test. D) two-factor ANOVA no replication.

14 Total degrees of freedom would be A) 19 B) 12 C) 35 D) 59

15 An interaction test would be appropriate. A) True. B) False

Optional Information:
State/Country relating to Question: United States

I am in need of help don't know statistics

Expert:  Sandhya replied 4 years ago.
Table is missing for question 5 and 13.

Thanks
Customer: replied 4 years ago.
It"s Formatted can you see what You can help me with Now?
Expert:  Sandhya replied 4 years ago.
There should be two ANOVA tables for question 5 and 13. I need those table to answer questions from 5 to 15.

Thanks
Customer: replied 4 years ago.

Source of variation ss df MS F P-value

Amplifier 99.02344 99.02344 0.0005718

Position 93.98698 31.32899 3.215807 0.051003

Interaction 10.15365 3 3.384549 0.347412 0.791505

Error 155.875 16 9.742188

total (NNN) NNN-NNNN 23

Expert:  Sandhya replied 4 years ago.
Thanks for the info

Can you please send another table as well?

Thanks
Customer: replied 4 years ago.

the following scenario to answer questions 13 to 15.
Three randomly-chosen pieces of four types of PVC pipe of equal wall thickness are tested to failure to determine the burst strength (in pounds per square inch) under three temperature conditions, yielding the results shown below.

Temperature PVC1 PVC2 PVC3 PVC4

250 301 235 217

Hot(70 C) 273 285 260 255

281 275 279 241

Warm (40 C) 321 342 302 240

322 322 315 260

299 339 301 278

358 375 328 301

Cold (10 C) 363 355 336 333

341 354 342 302

Expert:  Sandhya replied 4 years ago.
You can view this answer by clicking here to Register or Login and paying \$3.
Sandhya, Tutor
Category: Homework
Satisfied Customers: 3709
Experience: I have several years of teaching experience.

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

### What Customers are Saying:

• Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
< Previous | Next >
• Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
• This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
• Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
• I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
• Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
• Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
• He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here. Diane Dallas, TX

• ### LogicPro

#### Satisfied Customers:

4925
Expert in Java C++ C C# VB Javascript Design SQL HTML
< Last | Next >

### LogicPro

#### Satisfied Customers:

4925
Expert in Java C++ C C# VB Javascript Design SQL HTML

### Manal Elkhoshkhany

#### Satisfied Customers:

4538
More than 5000 online tutoring sessions.

### Linda_us

#### Satisfied Customers:

3138
Post Graduate Diploma in Management (MBA)

### Chris M.

#### Satisfied Customers:

2602
Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)

### F. Naz

#### Satisfied Customers:

2126
Experience with chartered accountancy

### Bizhelp

#### Satisfied Customers:

1887
Bachelors Degree and CPA with Accounting work experience