Week 6 Statistics

City: Manteca California

Required Resources Read/review the following resources for this activity:

Textbook: Chapter 8 Lesson 6 Reading Minimum of 1 scholarly source AND one appropriate resource such as the textbook, math video and/or math website Initial Post Instructions You must submit your initial post FIRST before you can view and respond to your classmates’ initial posts.

Use the course Excel spreadsheet to construct a 90% confidence interval for proportion research

Find the average price of homes in your state (cite your source). Gather a Sample: Record the prices for 15 randomly selected homes in your state. (Check Zillow.com or Realtor.com). Construct the confidence interval using Excel

Use your sample to construct a 90% Confidence Interval for the “Proportion of homes that have a price ABOVE the average price of the state.” a). Verify that the sampling distribution of this proportion can be approximated by a normal distribution. If a normal distribution cannot be used, gather more data to satisfy the requirement.

b). Enter the Confidence Level (0.90), ‘n’ (Sample Size), and ‘x’ (Number of Successes) in the Week 6 Excel Spreadsheet.

c). From the Excel Spreadsheet: Identify the point estimate pâ€™, the critical value Zc, the Margin of Error, and the Lower and Upper Limits of the Confidence Interval. (Round all values to 2 decimal places.)

d). Provide a screenshot of the Excel spreadsheet displaying steps b) and c).

e). Explain how the Point Estimate and the Margin of Error are used to find the Lower and Upper Limits.

Interpret the Confidence Interval (2â€“3 Sentences)

State your Confidence Interval and explain what it means. Explain as if you were talking to someone who has not taken statistics. Follow-up Post Instructions Respond to at least one peer. Further the dialogue by providing more information and clarification.

Here are some suggested responses:

Construct a 95% or 99% confidence interval based on a classmate’s data. Discuss how the margin of error and width of the interval change. Pick a specialization in healthcare (General Surgery, Labor & Delivery, Pediatrics, Social Work, etc.). Research a topic within that specialization that would involve constructing a confidence interval. Writing Requirements Minimum of 2 posts (1 initial & 1 follow-up) Your initial post must contain: In-text citations in APA format to highlight where references were utilized. List references in APA format at the bottom of your initial post.

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