## PUB-550 Topic 3 DQ 2

PUB-550 Topic 3 DQ 2 for \$8 Only

Review the Healthy People 2020 website. Identify one of the health issues and propose a scenario that would use a z-test as the first step in the six steps of hypothesis testing. Discuss the remaining five steps based on your scenario, including clearly articulating the null and alternative hypotheses for your scenario.

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## Answers for Applied Statistics: Regulation a Kind of Steel Should Weight

According to the regulation a kind of steel should weight 185 kg if five pieces randomly selected from different productions have weights 171.6 , 191.8 , 178.3 , 184.9 and 189.1 kg test the null hypothesis which says the population mean is equal to 185 kg against the alternative hypothesis which says population mean is lower than 185 kg at the 5% level of significance.

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## PUB550 Week 3 Hypothesis Testing

The purpose of this assignment is to evaluate the steps of hypothesis testing.

Hypothesis testing is a central component in understanding and interpreting public health research. Research questions are applied through a testable hypothesis established before the data is collected. It provides the rationale for the study and guides the researcher in what tests to use and how to interpret the results.

Identify a peer-reviewed article from one of the data sources available on the “Data Resource Document.” You will need to visit the various websites listed on the document to search for a research article that is of interest to you. Include the link to the selected article in a 750-1,000 word summary that address the following as it relates to the article.

1.     What test statistic did the researchers use? What did the authors set as the significance level of the test statistic?

2.     What was the null hypothesis? What was the alternative hypothesis? Were these clearly stated in the article, or did you have to extrapolate based on the background in the article?

3.     Discuss potential bias that may have resulted from the study design and data collection that could have affected the validity of the test.

4.     Summarize the story told by the data used in this study as it applies to the larger population

5.     Comment on whether the authors used the interpretation approach discussed in the textbook, including (a) summarize why the study was done, (b) discuss the factual results, (c) explain what the results mean, and (d) make suggestions for future research.

Prepare this assignment according to the guidelines found in the APA Style Guide, located in the Student Success Center. An abstract is not required.

This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.

You are required to submit this assignment to LopesWrite. Refer to the LopesWrite Technical Support articles for assistance.