Problems are eliminated or reduced with a repeated measure

Assignment Help Other Subject
Reference no: EM13489442

1. Participants enter a research study with unique characteristics that product different scores from one person to another. For an independent measures study these individual difference can cause problems. Briefly explain how these problems are eliminated or reduced with a repeated measure.

2. A researcher conducts an experiment comparing two treatment conditions and obtains data with 10 scores for each treatment condition.

a. If the researcher used an independent measures design. How many subjects participated in the experiment?

b. If the researcher used a repeated measures design, how many subjects participated in the experiment?

c. If the researcher used a match subjects design, how many subjects participated in the experiment?

3. Research has shown that losing even one night sleep can have a significant on performance of complex tasks such as a problem solving (Linde& Bergstroem, 1992)To demonstrate this phenomenon a sample of n = 25 college students was given a problem solving task on one day and again at noon on the following day. The students were not permitted any sleep between the two tests. For each student, the difference between the two tests. For each student, the difference between the first and second score was recorded. For this sample the student’s average M0 =4.7 points better on the first test with variance of s2 =64for the difference scores.

a. Do the data indicate a significant change in problem solving ability? Use a two tailed test with a = .05
b. Compute an estimated Cohen’s d to measure the size of the effect.

4. A researcher for a cereal company wanted to demonstrate the health benefits of eating oatmeal. A sample of 9 volunteers was obtained and each participant ate a fixed diet without any oatmeal for 30 days. At the end for the 30 day period, cholesterol was measured for each individual. Then the participants began a second diet except that they added 2 cups of oatmeal each day. After the second 30 day period, cholesterol levels were measured again and the researcher recorded the difference between the tow scores for each participants. For this sample, cholesterol scores averaged M0 =16 points longer with the oatmeal diet with SS = 538 for the different scores.

a. Are the data sufficient to indicate a significant change in cholesterol level? Use the two tailed test with a = .01.

b. Compute r2 the percentage of variance accounted for by the treatment, to measure the size of the treatment effect.

c. Write a sentence describing the outcome of the hypothesis test and the measure of effect size as it would appear in a research report.

Reference no: EM13489442

Questions Cloud

Demonstrate the health benefits of eating oatmeal : A researcher for a cereal company wanted to demonstrate the health benefits of eating oatmeal. A sample of 9 volunteers was obtained and each participant ate a fixed diet without any oatmeal for 30 days. At the end for the 30 day period, cholester..
Significant on performance of complex tasks : Research has shown that losing even one night sleep can have a significant on performance of complex tasks such as a problem solving (Linde& Bergstroem, 1992)To demonstrate this phenomenon a sample of n = 25 college students was given a problem so..
Neurological test scores significantly lower : Downs and Abwender (2002) evaluated soccer players and swimmers to determine whether the routine blow to the head experienced by soccer player produced long term neurological deficits. In the study, neuroligical test were administered to mature so..
Demonstrating how the results from the hypothesis test : Numerous studies have found that males repeat higher self esteem than females, especially for adolescents (Kling, Hyde, Showers, & Bussell, 1999). Typical results show a mean of self esteem score of M = 39.0 with SS = 60.2 for a sample of n= 10 ma..
Problems are eliminated or reduced with a repeated measure : Participants enter a research study with unique characteristics that product different scores from one person to another. For an independent measures study these individual difference can cause problems. Briefly explain how these problems are elim..
Null hypothesis although the independent variable : For each of the following examples, explain whether the researcher has made a correct decision or has made a Type 1 or Type 2 error. Explain why. a) Dr. G rejects the null hypothesis although the independent variable had no effect
Struggling with a desire to follow worldly wisdom. : provide a scenario that presents a person who is struggling with a desire to follow worldly wisdom. Provide biblical wisdom you would use to mentor this person. Discuss the posts of your classmates. Do you agree with their ideas?
Discuss the upsides and the downsides of your type : Take the Big 5 Personality Inventory on p. 311 in our book. Write a 300-500 word summary of your type, as described by the Big 5 Inventory; discuss the upsides and the downsides of your type
How accurate is eyewitness testimony : How accurate is “eyewitness” testimony? Do you think that it might be trusted too much?

Reviews

Write a Review

 

Other Subject Questions & Answers

  Theatre-formulate a manifesto for the art of acting

Theatre/formulate a manifesto for the art of acting. a manifesto is a brief passionate and personal statement of belief and purpose include: what you want to do for the world through your acting? what you must do to empower youself to achieve you pur..

  Promote legal and ethical conduct

How can an organization be socially responsible and promote legal and ethical conduct?

  Research on memory construction indicates

Research on memory construction indicates that

  Clara writes the following proof for the theorem if the

clara writes the following proof for the theorem if the diagonals of a quadrilateral bisect each other the

  Locus of control

locus of control is when a person believes they have control;  locus of control is when a person feels an outside source has  control.

  Explanations for jacks classroom behavior

Jack is a second-grade student. He seems to frequently disrupt the class by throwing objects at other students and projecting aggressive behaviors. using the major theoretical perspectives, give four explanations for jacks classroom behavior.

  Symbolize in predicate logic

Some eccentric academics respect only the students that respect all eccentric academics. Please use the following symbolization key:

  Research proposal statment intellectual property law ipl

using the following research topic amp research proposal statementsubmit the following components for the research

  Buy reviewing material on emotional intelligence

Buy reviewing material on emotional intelligence in chapter3, how might you use this information to foster collabortion in class?

  Heard and interpreted by the supreme court

Evaluate the rights and responsibilities that the Constitution gives you as an American citizen, aside from the rights listed in the Bill of Rights. Why did each case need to be heard and interpreted by the Supreme Court?

  Writing assignment identifying the hypothesisconsider a

writing assignment identifying the hypothesisconsider a social issue in which you are interested. it could be human

  Type of innovation in nursing

If you heard that the kind of innovation you are proposing was to be introduced in your present work setting, describe what you would want to know about it before willing to participate in such a project.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd