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Please note that each and every assignment has its own word limit.

The purpose of this assignment is to practice calculating confidence intervals.

For this assignment, students will utilize Excel and SPSS Statistics and the “Example Dataset.”

Using the “Example Dataset,” complete the following:

  • Based on a normal distribution curve, calculate the probability of an individual being 60 years or older in this population. Show the Excel and SPSS formulas or your hand calculations. Include screenshots as needed to illustrate this.
  • Using the sample standard deviation of age as an estimate of the population standard deviation, calculate by hand the standard error of the mean. Show your calculations and the answer.
  • Calculate by hand a 95% confidence interval for “Age” based on the sample mean. Use SPSS to verify your answer. Include your calculations and screenshots of the SPSS output.
  • Interpret the confidence interval for age and explain the three pieces of information needed to calculate a confidence interval.

Submit one Word document that includes all of the assignment deliverables.

General Requirements

You are required to cite at least FIVE sources to complete this assignment. Sources must be published within the last 5 years and appropriate for the discussion question criteria and public health content.

Prepare this assignment according to the guidelines found in the APA Style Guide. An abstract is not required.

While APA style is required, solid academic writing is expected as well, and documentation of sources should be presented using APA formatting guidelines.

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

PLEASE make sure APA citation and permalink for articles are complete and correct.

PLEASE add the links/sites below to the reference list if you use any of these readings and make sure everything is in proper APA format.


Read Chapters 4 and 5 in Using and Interpreting Statistics: A Practical Text for the Behavioral, Social, and Health Sciences.



View “The Best Stats You’ve Ever Seen,” by Rosling (2006), located on the TED website.



View the following tutorials from the SPSS Tutorials media.

  • Frequency Tables and Histograms
  • Descriptive Statistics



View the following terms in The Visual Learner: Statistics media.

  • Confounding
  • Histogram

View the following calculations in The Visual Learner: Statistics media.

  • Frequency Distribution
  • Measure of Center ‘Mean’
  • Measure of Center ‘Median’
  • Measure of Center ‘Mode’
  • Range and Standard Deviation
  • Variance



The “Sampling Distribution” simulation, located on the Rice Virtual Last in Statistics website, will be used for a discussion question in this topic.



For assistance with using Excel software, use the “Excel Training: Create and Format PivotTables and Pivot Charts” video library, located on the Microsoft website.



MUST have at least 5 citations with the page numbers and 5 references in APA format.(The List of References should not be older than 2016 and should not be included in the word count.)

Be sure to support your postings and responses with specific references to the Learning Resources.

It is important that you cover all the topics identified in the assignment. Covering the topic does not mean mentioning the topic BUT presenting an explanation from the context of ethics and the readings for this class

I am a stickler for good organization in everything. I do not want to have to dig for your answers. For instance, if an assignment asks you to provide three examples of something, I suggest that you number them 1-3 so I can find them easily. I also expect that when you submit something as a narrative, you pay attention to how you organize your thoughts: use paragraphs with a topic sentence and supporting sentences; and change paragraphs whenever you introduce a new idea. Also, if there are multiple parts to an assignment, use sub-heads within the paper to organize them.

To get maximum points you need to follow the requirements listed for this assignments 1) look at the word/page limits 2) review and follow APA rules 3) create subheadings to identify the key sections you are presenting and 4) Free from typographical and sentence construction errors.


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