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📚 Python for Introductory Statistics: Lab Workbook
Chapters ▾
1. Introduction to Python2. Python List3. Python Syntax4. Python Loops5. Frequency Distributions and Graphs6. Measure of Center and Variation7. Measures of Position8 Discrete Probability Distributions9. Continuous Probability DistributionConfidence Intervals11. Hypothesis Testing12. Linear Regression and Correlation13. Analysis of Categorical Data14. Advanced Statistics TopicsLab AnswersReferencesAppendix 1Appendix 2: Random Integer GeneratorAppendix 3: FactorialsResources

10.3 Confidence Intervals for Proportions (z distribution)

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Lab 10.3.1

In a random sample of 120 adults, 51 are fully vaccinated for Covid19. Construct a 90% confidence interval using the conf_prop function above.

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Lab 10.3.2

In a random sample of 120 adults, 50% are fully vaccinated for Covid19. Construct a 95% confidence interval using the conf_prop function above.

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Lab 10.3.3

Town officials want to determine the current percentage of residents vaccinated for Covid19. How many residents should be surveyed in order to be 90% confident that the estimated proportion is within five percentage points of the true population proportion who are vaccinated for Covid19? Previously the proportion was 0.55. Use the samp_pro function below.

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Adapted from Python for Introductory Statistics: Student's Lab Workbook, by Simon Aman (Truman College, City Colleges of Chicago), licensed under CC BY 4.0. Changes were made: reformatted as an accessible XYZ web edition with live in-browser code cells. License: CC-BY-4.0.