Statistical Inferences

Overview

Clinical research tests and results are based on outcomes from sample data. To make inferences about a larger population based on these results, you need to apply specific inferential techniques and evaluate their statistical significance. In this activity, you will use hypothesis testing to evaluate the significance of a test, given the p value and confidence intervals of a data set.

Prompt

Find a clinical research article that uses at least one of the statistical tests you have learned about in Module One. For help finding clinical research articles, refer to the Shapiro Library research guide for NUR 520 located in the Start Here section of the course. The article should also present the p values and confidence intervals for the data. The article should use one of the tests listed below:

• T-test
• ANOVA
• Chi-square test
• Correlation
• Proportion test

Interpret the statistical significance of the hypotheses and confidence intervals in your chosen article. Provide specific evidence from at least two scholarly sources to support your claims.

Specifically, you must address the following rubric criteria:

1. Summary: Summarize the research question of your chosen article.
2. P value: Interpret the significance of the p value based on the hypothesis test that has been performed. Include the following details:
   1. Identify one p value from the article.
   2. Determine the null hypothesis for the p value from the test of significance.
   3. Determine the alternate hypothesis for the p value from the test of significance.
   4. Infer the statistical significance of the hypotheses based on the p value.
3. Confidence Interval: Interpret the significance of a test for a given confidence interval using hypothesis testing. Include the following details:
   1. Identify one confidence interval from the article.
   2. Determine the null hypothesis for the confidence interval.
   3. Determine the alternate hypothesis for the confidence interval.
   4. Infer the statistical significance of the hypotheses based on the confidence interval.
4. Conclusion: Derive conclusions in the context of the data and the research question of your article. Include the following details:
   1. Describe what the statistical inferences from the hypothesis test indicate about the research question.
   2. Describe what the statistical inferences about the confidence interval indicate about the research question.

What to Submit

Your submission should be a 2- to 3-page Word document. Use 12-point Times New Roman font, double spacing, and one-inch margins. Sources should be cited according to APA style.

Article to use:

Kolhar, M., Kazi, R. N. A., & Alameen, A. (2021). Effect of Social Media Use on learning, Social Interactions, and Sleep Duration among University Students. Saudi Journal of Biological Sciences, 28(4), 2216–2222. https://doi.org/10.1016/j.sjbs.2021.01.010

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