Question: Use the data set you collected for the Week 5 lab (heights of 10 different people plus the 10 heights provided by your instructor). Data
Use the data set you collected for the Week 5 lab (heights of 10 different people plus the 10 heights provided by your instructor).
Data Collected: 60, 68, 65, 63, 65, 65, 63, 69, 68, 70
Data Provided: 63, 64, 65, 66, 67, 68, 69, 70, 72, 74
Week 6 Excel Sheet: https://docs.google.com/spreadsheets/d/1dET7ACtTC8_AAQCPLYTsbTzE60aEiCDi/edit#gid=1770010638
Please answer the following questions in complete sentences:
- Discuss your method of collection for the values that you are using in your study (systematic, convenience, cluster, stratified, simple random)
- What are some faults with this type of data collection?
- What other types of data collection could you have used, and how might this have affected your study?
Calculation of 95% Confidence Interval
- Give a point estimate (mean) for the average height of all people at the place where you work. What is your point estimate, and what does this mean?
- Find a 95% confidence interval for the true mean of heights. What is the interval? [Provide a Screenshotof your work from the t value Confidence Interval for from the Confidence Interval tab on the Week 6 Excel spreadsheet]
- Give a practical interpretation of the 95% confidence interval [complete sentence].
Calculation of 99% Confidence Interval
Now, change your confidence level to 99% for the same data.
- Find a 99% confidence interval for the true mean of heights. What is the interval? [Provide a Screenshotof your work from the t value Confidence Interval for from the Confidence Interval tab on the Week 6 Excel spreadsheet]
- Give a practical interpretation of the 99% confidence interval [complete sentence].
Compare Margins of Error
- Would the margin of error be larger or smaller for the 99% CI? Explain your reasoning.
- As the confidence level increases, what happens to the Margin of Error?
Please answer the following questions in complete sentences:
- Discuss your method of collection for the values that you are using in your study (systematic, convenience, cluster, stratified, simple random).
- What are some faults with this type of data collection?
- What other types of data collection could you have used, and how might this have affected your study?
Calculation of 95% Confidence Interval
- Give a point estimate (mean) for the average height of all people at the place where you work. What is your point estimate, and what does this mean?
- Find a 95% confidence interval for the true mean of heights. What is the interval? [Provide a Screenshotof your work from the t value Confidence Interval for from the Confidence Interval tab on the Week 6 Excel spreadsheet]
- Give a practical interpretation of the 95% confidence interval [complete sentence].
Calculation of 99% Confidence Interval
Now, change your confidence level to 99% for the same data.
- Find a 99% confidence interval for the true mean of heights. What is the interval? [Provide a Screenshotof your work from the t value Confidence Interval for from the Confidence Interval tab on the Week 6 Excel spreadsheet]
- Give a practical interpretation of the 99% confidence interval [ complete sentence].
Compare Margins of Error
- Would the margin of error be larger or smaller for the 99% CI? Explain your reasoning.
- As the confidence level increases, what happens to the Margin of Error?
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