Week 11

Week 11

Download the assignment template from this week’s resources and review the steps for this assignment. Once you have reviewed the steps, complete the problems and questions as presented. Show your work using your statistical program output. You may show manual/hand calculations only if SPSS program cannot be accessed. There are two deliverables you must submit this week:

SPSS output file or manual calculations: Submit the SPSS output file in PDF form, or you can scan your work and submit it as a low-resolution graphic.

Word document: Submit a Word file answering the questions asked in the assignment. Describe the results in APA style incorporating relevant tables and figures formatted in APA style.

Length: SPSS output or manual calculations and a 1 to 2-page Word document

The completed assignment should address all of the assignment requirements, exhibit evidence of concept knowledge, and demonstrate thoughtful consideration of the content presented in the course. The writing should integrate scholarly resources, reflect academic expectations and current APA standards, and adhere to Northcentral University’s Academic Integrity Policy.

When applicable, conduct a Turnitin pre-check and then upload your completed assignment and click the Submit to Dropbox button.

PSY-7

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04 Statistics I

Week 11 Assignment: Chi-square

In a study of high school students at least 16 years of age, researchers obtained the survey results summarized in the table below (based on data from “Texting While Driving and Other Risk Motor Vehicle Behaviors Among U.S. High School Students” by O’Malley, Shults, and Eaton,
Pediatrics, Vol. 131,

No

.6).

· State the null and alternative hypotheses.

· Assuming independence, what are the expected frequencies for each of these variables?

· What is the value of the
X2 statistic?

· Use a 0.05 significance level to test the claim of independence between texting while driving and irregular seat belt use. Are those two risky behaviors independent of each other? Calculate the chi-square manually or using Excel.

Submit the SPSS output file in a PDF to show the work you have done. Also submit a separate Word file describing the results in APA. Incorporate relevant table(s) and figure/graph(s) in the Word document formatted in APA style.

*Assignment adapted from Bennett, J. O., Briggs, W. L., & Triola, M. F. (2017).
Statistical reasoning for everyday life. Boston, MA: Pearson-Addison Wesley.

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