Project: Hypothesis Testing-Article
Learning Objectives
Identify a hypothesis testing problem in print.
Conduct a survey to verify or dispute the results of the hypothesis test.
Summarize the article, analysis, and conclusions in a report.
Instructions
As you complete each task, check it off. Answer all questions in your summary.
_____Find an article in a newspaper, magazine, or on the internet which makes a claim about ONE population mean or ONE population proportion. The claim may be based upon a survey that the article was reporting on. Decide whether this claim is the null or alternate hypothesis.
_____Copy or print out the article and include a copy in your project, along with the source.
_____State how you will collect your data. (Convenience sampling is not acceptable.)
_____Conduct your survey. You must have more than 50 responses in your sample. When you hand in your final project, attach the tally sheet or the packet of questionnaires that you used to collect data. Your data must be real.
_____State the statistics that are a result of your data collection: sample size, sample mean, and sample standard deviation, OR sample size and number of successes.
_____Record the hypothesis test on the solution sheet, based on your experiment. Do a DRAFT solution first on one of the solution sheets and check it over carefully. Have a classmate check your solution to see if it is done correctly. Make your decision using a 5% level of significance. Include the 95% confidence interval on the solution sheet.
_____Create a graph that illustrates your data. This may be a pie or bar graph or may be a histogram or box plot, depending on the nature of your data. Produce a graph that makes sense for your data and gives useful visual information about your data. You may need to look at several types of graphs before you decide which is the most appropriate for the type of data in your project.
_____Write your summary (in complete sentences and paragraphs, with proper grammar and correct spelling) that describes the project. The summary MUST include:
Brief discussion of the article, including the source
Statement of the claim made in the article (one of the hypotheses).
Detailed description of how, where, and when you collected the data, including the sampling technique; did you use cluster, stratified, systematic, or simple random sampling (using a random number generator)? As previously mentioned, convenience sampling is not acceptable.
Conclusion about the article claim in light of your hypothesis test; this is the conclusion of your hypothesis test, stated in words, in the context of the situation in your project in sentence form, as if you were writing this conclusion for a non-statistician.
Sentence interpreting your confidence interval in the context of the situation in your project
Assignment Checklist
Turn in the following typed (12 point) packet for your final project:
_____Cover sheet containing your name(s), class time, and the name of your study
_____Summary, which includes all items listed on summary checklist
_____Solution sheet neatly and completely filled out. The solution sheet does not need to be typed.
_____Graphic representation of your data, created following the guidelines previously discussed; include only graphs which are appropriate and useful.
_____Raw data collected AND a table summarizing the sample data (n, x¯ and s; or x, n, and p', as appropriate for your hypotheses); the raw data does not need to be typed, but the summary does. Hand in the data as you collected it. (Either attach your tally sheet or an envelope containing your questionnaires.