How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Martin Your Own Question

Martin
Martin, Physicist
Category: Homework
Satisfied Customers: 765
Experience:  20+ years of research, engineering and teaching
47181708
Type Your Homework Question Here...
Martin is online now
A new question is answered every 9 seconds

What is the advantage of a one-tailed test over a two-tailed

Resolved Question:

What is the advantage of a one-tailed test over a two-tailed test?
(Points : 1)
Less data variability in the groups involved.
Smaller critical values indicate significance.
Rejecting at HO = .05 involves less chance of error.
There are fewer calculations to make.


2. What is the probability of type II error when the null hypothesis is rejected?
(Points : 1)
0.5
0.05
0.025
0


3. Why do the critical values change with degrees of freedom for the t-tests?
(Points : 1)
Different degrees of freedom define different t distributions.
Because the critical values are calculated directly from degrees of freedom.
The degrees of freedom reflect the value of SEM.
The degrees of freedom are indexed to the M – μM
difference.


4. The one-sample t-test differs from the z-test in which way?
(Points : 1)
There are no parameter values involved in a t-test.
The t-test is more sensitive to minor differences between sample and population.
With the t-test one can be confident of the normality of the data.
The t-test requires no parameter standard error of the mean.


5. Which is the symbol used for the test statistic in ANOVA? (Points : 1)
M
z
t
F


6. To what does “main effect” refer in an ANOVA of company sales? (Points : 1)
It means the “primary influence”.
It refers to the sum of the error variance.
It designates the interaction of variables.
It refers to an independent variable.


7. What statistic measures data variability in both groups in an independent t-test?
(Points : 1)
The critical value of t.
The M1 – M2 difference.
The calculated value of t.
The SEd.





8. When a significant interaction is graphed, what is indicated on the vertical axis? (Points : 1)
The dependent variable.
The complexity of the interaction.
The independent variable.
The error term.


9. Theoretically, how many independent variables can a factorial ANOVA accommodate? (Points : 1)
1
2
4
any number


10. How do statistical tests like the one sample t adjust for the absence of parameter values?
(Points : 1)
The values are estimated from sample data.
The values are assumed to have a constant value.
The test is reconstructed so that the values aren’t needed.
The test is reformulated so that data are always normal.
Submitted: 1 year ago.
Category: Homework
Expert:  Martin replied 1 year ago.
Hi there! I'm working on your questions now. Will be back shortly with your answers. Do you have a hard deadline?
Customer: replied 1 year ago.

my deadline is in about a hour

Expert:  Martin replied 1 year ago.
OK, no problem, thanks!
Customer: replied 1 year ago.

I am about on top of the deadline do you know how much longer you may be?

Expert:  Martin replied 1 year ago.
THIS ANSWER IS LOCKED!
You can view this answer by clicking here to Register or Login and paying $3.
If you've already paid for this answer, simply Login.
Martin, Physicist
Category: Homework
Satisfied Customers: 765
Experience: 20+ years of research, engineering and teaching
Martin and 14 other Homework Specialists are ready to help you
Expert:  Martin replied 1 year ago.
Hi Chad!

I hope you are doing well. I look forward to working with you again. Just put "For Martin" at the beginning of your questions, and I'll be sure to get them.

Thanks!

JustAnswer in the News:

 
 
 
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.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...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
< Last | 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
 
 
 

Meet The Experts:

 
 
 
  • Manal Elkhoshkhany

    Tutor

    Satisfied Customers:

    4520
    More than 5000 online tutoring sessions.
< Last | Next >
  • http://ww2.justanswer.com/uploads/BU/BusinessTutor/2012-2-2_115741_Kouki2.64x64.jpg Manal Elkhoshkhany's Avatar

    Manal Elkhoshkhany

    Tutor

    Satisfied Customers:

    4520
    More than 5000 online tutoring sessions.
  • http://ww2.justanswer.com/uploads/LI/lindaus/2012-6-10_04811_IMG20120609164157.64x64.jpg Linda_us's Avatar

    Linda_us

    Finance, Accounts & Homework Tutor

    Satisfied Customers:

    3121
    Post Graduate Diploma in Management (MBA)
  • http://ww2.justanswer.com/uploads/ComputersGuru/2010-02-13_051118_Photo41.JPG LogicPro's Avatar

    LogicPro

    Engineer

    Satisfied Customers:

    3035
    Expert in Java C++ C C# VB Javascript Design SQL HTML
  • http://ww2.justanswer.com/uploads/lanis/2009-4-1_233717_phput9xef_c1pm.jpg Lani S.'s Avatar

    Lani S.

    Tutor

    Satisfied Customers:

    2457
    Registered Nurse, Internet Researcher, Private Tutor
  • http://ww2.justanswer.com/uploads/chooser77/2009-08-18_162025_Chris.jpg Chris M.'s Avatar

    Chris M.

    M.S.W. Social Work

    Satisfied Customers:

    2341
    Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)
  • http://ww2.justanswer.com/uploads/JawaadAhmed/2009-6-27_12137_SIs_SHadi.jpg F. Naz's Avatar

    F. Naz

    Chartered Accountant

    Satisfied Customers:

    1975
    Experience with chartered accountancy
  • http://ww2.justanswer.com/uploads/JK/jkcpa/2011-1-16_182614_jkcpa.64x64.jpg Bizhelp's Avatar

    Bizhelp

    CPA

    Satisfied Customers:

    1873
    Bachelors Degree and CPA with Accounting work experience