Cash-back offer from April 23rd to 27th, 2024: Get a flat 10% cash-back credited to your account for a minimum transaction of $50.Post Your Questions Today!

Question DetailsNormal
$ 75.00

BTM8106 Week 7 | Complete Solution

Question posted by
Online Tutor Profile
request

Part 1

 

  1. Compare and contrast internal and external validity. Describe and give examples of research questions for which external validity is a primary concern. Describe and give examples of research questions in which internal validity is a primary concern. Discuss strategies researchers use in order to make strong claims about the applicability of their findings to a target population.
  2. Compare and contrast random selection and random assignment. Be sure to include a discussion of when you would want to do one or the other and the possible consequences of failing to do random selection or random assignment in particular situations.
  3. Explain the relationship between sample size and the likelihood of a statistically significant difference between measured values of two groups. In other words, explain why, all else being equal, as sample size increases the likelihood of finding a statistically significant relationship increases.
  4. Compare and contrast probability and non-probability sampling. What are the advantages and disadvantages of each?

Length: 5-7 pages not including title page and reference page.

References: include at least 3-5 resources.

Part 2

If you do a quantitative study for your dissertation, you must estimate the sample size you will need in order to have a reasonable chance of finding a relationship among the variables stated in your research hypotheses (should one exist), given your statistical analysis(es) and assumptions/calculations of factors 2-4 above. You must do this, even if you plan to use a convenience sample (see below). There are a number of sample size calculators available. Northcentral uses G*Power, which is required in this Activity. You will use G*Power’s “a priori power analysis” function to calculate a sample size. If it yields an unrealistically large size sample, you will rethink your design and assumptions and, perhaps, use G*Power’s “compromise power analysis” to estimate a workable sample size that makes sense. If you plan on using a convenience sample, you would use both analyses as part of your argument that your convenience sample is large enough.

Warm-up:
Download G*Power and play around with it. See how changes in assumptions and parameters affect sample size estimates. To download visit http://www.gpower.hhu.de/en.html

Submit:

  1. Calculate the sample size needed given these factors:
     
    • one-tailed t-test with two independent groups of equal size
    • small effect size (see Piasta, S.B., & Justice, L.M., 2010)
    • alpha =.05
    • beta = .2
  2. Assume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample half the size. Indicate the resulting alpha and beta. Present an argument that your study is worth doing with the smaller sample.
  1. Calculate the sample size needed given these factors:
    • ANOVA (fixed effects, omnibus, one-way)
    • small effect size
    • alpha =.05
    • beta = .2
    • 3 groups
  2. Assume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample approximately half the size. Give your rationale for your selected beta/alpha ratio. Indicate the resulting alpha and beta. Give an argument that your study is worth doing with the smaller sample.

In a few sentences, describe two designs that can address your research question. The designs must involve two different statistical analyses. For each design, specify and justify each of the four factors and calculate the estimated sample size you’ll need. Give reasons for any parameters you need to specify for G*Power.

Length: 5-7 pages not including title page and reference page.

References: include at least 3-5 resources.

 

 

Available Answer
$ 75.00

[Solved] BTM8106 Week 7 | Complete Solution

  • This solution is not purchased yet.
  • Submitted On 21 Dec, 2015 10:47:59
Answer posted by
Online Tutor Profile
solution
Part 1 1. Compare and contrast internal and external validity. Describe and give examples of research questions for which external validity is a primary concern. Describe and give examples of research questions in which internal validity is a primary concern. Discuss strategies researchers use in order to make strong claims about the applicability of their findings to a target population. 2. Compare and contrast random selection and random assignment. Be sure to include a discussion of when you would want to do one or the other and the possible consequences of failing to do random selection or random assignment in particular situations. 3. Explain the relationship between sample size and the likelihood of a statistically significant difference between measured values of two groups. In other words, explain why, all else being equal, as sample size increases the likelihood of finding a statistically significant relations...
Buy now to view the complete solution
Other Similar Questions
User Profile
NUMBE...

BTM8106 Week 1 Complete Solution 100% Satisfaction Guaranteed!

.Jackson (2012) even-numbered Chapter Exercises (p. 244). You read in a health magazine about a study in which a new therapy technique for depression was examined. A group of depressed individuals volunteered to participate i...
User Profile
kimwo...

BTM8106 Week 1 Solution

Week 1 Answer the following questions: 1. Jackson (2012) even-numbered Chapter Exercises (p. 244). 2. What is the purpose of conducting an experiment? How does an experimental design accomplish its purpose? 3. Wha...
User Profile
Acade...

BTM8106 WEEK 1-8 Complete Solution

Week 1 Answer the following questions: 1. Jackson (2012) even-numbered Chapter Exercises (p. 244). 2. What is the purpose of conducting an experiment? How does an experimental design accomplish its purpose? 3. What are the ad...
User Profile
Acade...

BTM8106 Week 7 | Complete Solution

Part 1 1. Compare and contrast internal and external validity. Describe and give examples of research questions for which external validity is a primary concern. Describe and give examples of research questions in which inte...
User Profile
Exper...

Samples, Power Analysis, and Design Sensitivity

In G*Power First, we select in test family : t-test And in statistical test we choice  means: Difference between two independent means (two groups) Also in type of power analysis, we choice  A priori : Compute...

The benefits of buying study notes from CourseMerits

homeworkhelptime
Assurance Of Timely Delivery
We value your patience, and to ensure you always receive your homework help within the promised time, our dedicated team of tutors begins their work as soon as the request arrives.
tutoring
Best Price In The Market
All the services that are available on our page cost only a nominal amount of money. In fact, the prices are lower than the industry standards. You can always expect value for money from us.
tutorsupport
Uninterrupted 24/7 Support
Our customer support wing remains online 24x7 to provide you seamless assistance. Also, when you post a query or a request here, you can expect an immediate response from our side.
closebutton

$ 629.35