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Lab Assignment
The
highlight of this week’s lab is confidence intervals and the use of these
intervals in the health sciences. A short reading specifically relates
confidence intervals to health sciences. Then, you are asked to demonstrate
your knowledge of confidence intervals by practically applying them.
Step 1:
Use the two articles attached
step 2:
Consider using confidence intervals in health sciences with these articles as
inspiration and insights. (Articles attached)
Step 3:
Use the data collected below the Excel spreadsheet for the Week 5 Lab (heights
of 20 different people that you work. discuss
Using data collected above
the heights of 20 people, The participants of this study were selected using a
simple random sampling technique
· Your
method of collecting the values that you are using in your study is 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?
· Write
a paragraph summarizing what you learned from the articles provided. Consider the use of confidence intervals in
health sciences with these articles as inspiration and insights
Step 4:
Now, use the Week 6 Spreadsheet to help you calculate the following
questions/statements.
a) Give
a point estimate (mean) for the average height of all people at your workplace.
Start by putting the 20 heights you are working with into the blue Data column
of the spreadsheet. What is your point estimate, and what does this mean? Example of exel
b)
Find a 95% confidence interval for the
true mean height of all the people at your place of work. What is the interval?
[see screenshot below]
c)
c)
Give a practical interpretation of the interval you found in part b, and
explain carefully what the output means. (For example, you might say, “I
am 95% confident that the true mean height of all of the people in my company
is between 64 and 68 inches”).
d) Post a screenshot of your work from
the t value Confidence Interval for µ from the Confidence Interval tab on the
Week 6 Excel spreadsheet attached , Example of excel
[O1]
Step 5:
Now, change your confidence level to 99% for the same data, and post a
screenshot of this table, as well.
·
Give a practical interpretation of the 99%
confidence interval (Write a complete sentence)
Example of Excel
Step 6:
Compare the margins of error from the two screenshots. Would the margin of
error be larger or smaller for the 99% CI? Explain your reasoning
·
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?
Requirements
• Length:2 page
• 1-inch margins
• Double spaced
• 12-point Times New Roman font
• APA format for in-text citations: Cite
the two articles.
• Minimum of 2 scholarly sources
• Chapter 2
-https://openstax.org/books/introductory-business-statistics/pages/1-1-definitions-of-statistics-probability-and-key-terms
[O1]
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