Identify the independent variable and dependent variable

Assignment Help Other Subject
Reference no: EM131009075

Assignment: t-Test

Using data to compare a sample to the whole population or another targeted sample of people can help researchers make predictions about future behavior or phenomena. Comparisons and predictions such as these can answer research questions and can make an argument or statement more persuasive. When there are two groups to compare, tools such as the one-sample t-test and the two-sample t-test allow researchers to make such predictions and comparisons.

This application will allow you to further practice hypothesis testing by using a t-test to compare scores from two samples in order to determine if results are statistically significant. Download the data set that you will use for this assignment from the Weekly Data Set forum found on the course navigation menu. Be sure to watch this week's instructional video in the introduction or Learning Resources folder before beginning your Application Assignment.

Scenario: Imagine you are a researcher who is interested in how sleep deprivation impacts reaction times when driving. You randomly select a sample of 30 licensed drivers. Fifteen participants are randomly assigned to get 5 hours of sleep for three consecutive nights. The other 15 participants are randomly assigned to get 8 hours of sleep for three consecutive nights. For the purposes of this Assignment, assume that all participants sleep exactly the required amounts. After the third night, all participants take a driving simulation test that measures their reaction times.

You can find the data for this Assignment in the Weekly Data Set forum.

To complete this Assignment, submit by Day 7 a response to each of the following. Use SPSS to determine if amount of sleep is related to reaction time.

1. Explain whether the researcher should use an independent-samples t-test or a related-samples t-test for this scenario. Provide a rationale for your decision.

2. Identify the independent variable and dependent variable.

3. Knowing the researcher believes that people who sleep less will have slower reaction times, state the null hypothesis and alternate hypothesis in words (not formulas).

4. Explain whether the researcher should use a one-tailed test or two-tailed test and why.

5. Identify the obtained t value for this data set using SPSS.

6. State the degrees of freedom and explain how you calculated it by hand.

7. Identify the p value using SPSS.

8. Explain whether the researcher should retain or reject the null hypothesis. Provide a rationale for your decision. Are the results statistically significant?

9. Explain what the researcher can conclude about the relationship between amount of sleep and reaction times.

Reference no: EM131009075

Relationship among the brain and behavior

The study of the relationship among the brain and behavior is significant as this awareness gives psychology with a better understanding of how the physical brain can produce

The legal system has established precedents-public health

The legal system has established precedents that sometimes require medical care to be provided to patients even when relatives oppose it and there is little hope that the pati

Identify role of activism in changing political landscape

Identify the role of activism in changing the political landscape. (Reflect on the past few presidential elections). How can you be an activist to support positive change in

How are the human problems-solutions different in hinduism

Journal entries should be made for each of the seven major world religions considered. Your journal should contain complete sentences and be grammatically correct. While you

What is being done to improve the situation

What is being done to improve the situation (such as your state's programs or organizations). How the problem affects a society. What steps you believe should be taken to com

How individual choices interacted with individual choices

For each of these actions, describe how your individual choices interacted with the individual choices made by others. Were other people left better off or worse off by your

Demonstrate a rooting in greek philosophy

How does Simone Weil's view of justice demonstrate a rooting in Greek philosophy? Can you find a similar rootedness in the articulations of the idea of justice in the lives an

What artifacts are displayed on desks of the building

What artifacts are displayed on desks or in other areas of the building? Are family photos or other personal items allowed? How are common areas such as lunch rooms utilized?

Reviews

Write a Review

 
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