Login

Contact Us
Homework
Homework Questions? Ask a Tutor for Answers ASAP
Not a Homework Question?
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 Scott Your Own Question
Scott
,
MIT Graduate
Category:
Homework
Satisfied Customers:
3040
Experience:
MIT Graduate (Math, Programming, Science, and Music)
3546829
Type Your Homework Question Here...
Scott is online now
Which of the following is a true statement about hypothesis
Customer Question
Which of the following is a true statement about hypothesis testing? (Points: 1)
You conduct hypothesis testing to prove your null hypothesis.
You conduct hypothesis testing to prove your alternative hypothesis.
You conduct hypothesis testing to eliminate the effect of chance on your solution.
You conduct hypothesis testing to test the significance of a perceived relationship between variables.
2. Which of the following is not a true statement about a null hypothesis? (Points: 1)
It is the hypothesis you are trying to prove or disprove.
It is the hypothesis you are testing.
It is a statement of no association between variables or difference between groups.
It is related to the alternative hypothesis.
3. Which of the following is true of the statement: The men in this sample are taller than the women? (Points: 1)
It is a directional null hypothesis.
It is a directional alternative hypothesis.
It is a twotailed alternative hypothesis.
It is a onetailed null hypothesis.
4. Which is the correct null hypothesis based on this statement: People with diabetes have higher systolic blood pressure than people without diabetes? (Points: 1)
People with diabetes have lower systolic blood pressure than people without diabetes.
People with diabetes have equal systolic blood pressure when compared to people without diabetes.
People with diabetes have a systolic blood pressure equal to or lower than people without diabetes.
None of these are a null hypothesis.
5. Which of the following is an example of a Type 1 error? (Points: 1)
Rejecting a false null hypothesis.
Rejecting a true null hypothesis.
Failing to reject a false null hypothesis.
Failing to reject a true null hypothesis.
6. Which of the following is an example of a Type 2 error? (include on all quizzes) (Points: 1)
Rejecting a false null hypothesis.
Rejecting a true null hypothesis.
Failing to reject a false null hypothesis.
Failing to reject a true null hypothesis.
7. Which of the following is a true statement about Power? (Points: 1)
It is the additive inverse of a Type 2 error.
It is the opposite of a Type 2 error.
It is the additive inverse of a Type 1 error.
It is the opposite of a Type 1 error.
8. Which of the following statements about Type 1 and Type 2 error is false? (Points: 1)
They are both a form of chance error.
They are both represented using Greek letters.
They are both a form of systematic error.
Ideally you should try to keep both as low as possible in your study.
9. Which of the following is not true about Power? (Points: 1)
A study conducted with insufficient Power has a high chance of a Type 2 error.
Whenever you read of a study where they were unable to reject the null hypothesis you should check whether it had enough Power.
It is related to the Type 1 error rate you set for your study.
If sample size is constant, if you prespecify a higher type I error, the statistical power will increase.
10. Which of the following is the correct definition of Power? (Points: 1)
It is the likelihood of an investigator to reject a null hypothesis that is false and should be rejected.
It is the likelihood of an investigator to fail to reject a null hypothesis that is false and should be rejected.
It is the likelihood of an investigator to reject a null hypothesis that is true and should not be rejected.
It is the likelihood of an investigator to fail to reject a null hypothesis that is true and should not be rejected.
11. Given a Type 2 error rate of .15, what is the Power? (Points: 1)
15%
1.15
85%
Unable to calculate given the information.
12. Given a Type 2 error rate of .10, what is the Power? (Points: 1)
10%
90%
1.10
Unable to calculate given the information.
13. Which of the following is not true about Sample Size calculations? (Points: 1)
It depends on the type of statistical test you plan to use.
It can be calculated using software.
Some of the values used in calculating it are estimates.
It can be computed after performing the test to see if you had sufficient sample size.
14. Which of the following is true about sample size? (Points: 1)
The sample size you calculate will always be sufficient to conduct your statistical tests.
Things like unanswered questions and dropouts can reduce the available sample size.
The size of the effect you are trying to observe, whether a difference in means or an association between variables is not important when computing sample size.
A sample size of 100 is always sufficient.
15. Which is a reason for keeping your sample size as small as possible? (Points: 1)
Time required to analyze the data
Cost of analyzing the data
Cost of collecting the data
Controlling for Chance error
16. Which is not a reason for making your sample size as large as possible? (Points: 1)
Reducing Type 1 error
Reducing Systematic error
Reducing Chance error
Reducing Type 2 error
17. What does the Z1  α/2 represent in a sample size calculation? (Points: 1)
The Z value for the expected difference in means.
The Z value for the Type 2 error rate.
The Z value for the Type 1 error rate.
The Z value for the expected variance.
18. Which of the following parts of a sample size calculation are usually educated guesses? (Points: 1)
Z1  α/2
ES
Z1  β
None of the above
19. What happens to the following sample size calculation if you increase the value for ES: n = ((1.96 + .84)/2)2? (Points: 1)
The sample size goes down.
The sample size stays the same.
The sample size goes up.
Impossible to say given the information.
20. What happens to the following sample size calculation if you increase the value for Z1  β: n = ((1.96 + .84)/2)2? (Points: 1)
The sample size goes down.
The sample size stays the same.
The sample size goes up.
Impossible to say given the information.
Submitted:
4 years ago.
Category:
Homework
Share this conversation
JustAnswer in the News:
Askadoc 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 workfromhome 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
Meet The Experts:
LogicPro
Engineer
Satisfied Customers:
4925
Expert in Java C++ C C# VB Javascript Design SQL HTML
<
Last

Next
>
http://ww2.justanswer.com/uploads/ComputersGuru/20100213_051118_Photo41.JPG
LogicPro's Avatar
LogicPro
Engineer
Satisfied Customers:
4925
Expert in Java C++ C C# VB Javascript Design SQL HTML
http://ww2.justanswer.com/uploads/BU/BusinessTutor/201222_115741_Kouki2.64x64.jpg
Manal Elkhoshkhany's Avatar
Manal Elkhoshkhany
Tutor
Satisfied Customers:
4538
More than 5000 online tutoring sessions.
http://ww2.justanswer.com/uploads/LI/lindaus/2012610_04811_IMG20120609164157.64x64.jpg
Linda_us's Avatar
Linda_us
Finance, Accounts & Homework Tutor
Satisfied Customers:
3138
Post Graduate Diploma in Management (MBA)
http://ww2.justanswer.com/uploads/chooser77/20090818_162025_Chris.jpg
Chris M.'s Avatar
Chris M.
M.S.W. Social Work
Satisfied Customers:
2602
Master's Degree, strong math and writing skills, experience in oneonone tutoring (college English)
http://ww2.justanswer.com/uploads/JawaadAhmed/2009627_12137_SIs_SHadi.jpg
F. Naz's Avatar
F. Naz
Chartered Accountant
Satisfied Customers:
2126
Experience with chartered accountancy
http://ww2.justanswer.com/uploads/JK/jkcpa/2011116_182614_jkcpa.64x64.jpg
Bizhelp's Avatar
Bizhelp
CPA
Satisfied Customers:
1887
Bachelors Degree and CPA with Accounting work experience
http://ww2.justanswer.com/uploads/avremote/photoa.jpg
Seanna's Avatar
Seanna
Tutor
Satisfied Customers:
1781
3,000+ satisfied customers, all topics, A+ work
Related Homework Questions
Question
Date Submitted
You are a risk manager in a manufacturing company and one of
7/27/2016
7/27/2016
GLENN
It has been found that the average time Internet users spend
7/27/2016
7/27/2016
Donna Kakonge
Using The Rock Insurance Case study in a previous module
7/25/2016
7/25/2016
Donna Kakonge
Part III****** Modify the Week Three Java application using
7/21/2016
7/26/2016
LogicPro
Glenn I have one more essay due. Same thing it has to be a
7/20/2016
7/27/2016
GLENN
I was wondering if you could help me again. Here are the two
7/20/2016
7/25/2016
F. Naz
Kayla brings Riley, now 17 months, in of fever and rash. The
7/20/2016
7/26/2016
I need to find a service that can create tablets from
7/19/2016
7/19/2016
Donna Kakonge
To Glenn Write a paper of 3 to 5 pages (750 to1250 words)
7/18/2016
7/18/2016
GLENN
Hypothetical statistical question: interested in seeing if
7/16/2016
7/16/2016
GLENN
X
Ask a Tutor
Get a Professional Answer. 100% Satisfaction Guaranteed.
61 Tutors are Online Now
Type Your Homework Question Here...
characters left: