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You randomly survey people in the mall about whether or not they regularly use text messaging. The results are shown in the tally sheets below based on the people’s ages.
1. You randomly survey people in the mall about whether or not they
regularly use text messaging. The results are shown ...
You randomly survey people in the mall about whether or not they regularly use text messaging. The results are shown in the tally sheets below based on the people’s ages.
1. You randomly survey people in the mall about whether or not they
regularly use text messaging. The results are shown in the tally sheets
below based on the people’s ages.a. Make a two-way table that includes the marginal frequencies.b. Make a two-way table that shows both the joint and marginal relative frequencies. Round to the nearest hundredth, if necessary.c. What is the probability that someone who is between the ages of 20-29 also texts regularly?d. What is the probability that someone who is between the ages of 40-49 also texts regularly?e. Does the data show a relationship between age and texting? Explain.2. The data below represents the number of hits on your web site over 10 months.a. Make a scatter plot of ln y versus x. Use the scatter plot to find the equation for the line of best fit.b. Make a scatter plot of ln y versus ln x. Use the scatter plot to find the equation for the line of best fit.c. Based on your answers in part a and b, would an exponential model or a power model be better to represent this data? Explain.d. Use your answers from parts a and b to find an exponential model and a power model to represent this data by hand.e. Use the regression feature on your calculator to find an exponential model and a power model to represent this data.f. Use your answer from parts c and d to make the best estimate for the number of hits your web site will have in 12 months.
26 pages
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MA215 Grantham Week 1 Business Statistics Quiz Help
The collection of all elements of interest in a particular study is A portion of the population selected to represent the ...
MA215 Grantham Week 1 Business Statistics Quiz Help
The collection of all elements of interest in a particular study is A portion of the population selected to represent the population is called
Chamberlain College of Nursing Confidence Intervals Lab Report
MATH225N-61306
Modules
Week 7 Assignment: Lab
March 2020
Home
Syllabus
Announcements
Resources
Mo ...
Chamberlain College of Nursing Confidence Intervals Lab Report
MATH225N-61306
Modules
Week 7 Assignment: Lab
March 2020
Home
Syllabus
Announcements
Resources
Modules
Files
Grades
People
Bookstore
Library Guides
Media Gallery
My Media
New Webex
Academic Support
Week 7 Assignment: Lab
Due Apr 19 by 11:59pm
Points 50
Submitting a file upload
Required Resources
Read/review the following resources for this activity:
OpenStax Textbook: Chapter 8
Lesson
Chamberlain University Library
Scenario/Summary
The highlight of this week's lab is confidence intervals and the use of these intervals in the health sciences. There is a short reading that specifically relates confidence intervals to health sciences and then you are asked to demonstrate your knowledge of confidence intervals by applying them in a practical manner.
Deliverables
The deliverable is a Word document with your answers to the questions posed below based on the article you find.
Required Software
Microsoft Word
Internet access to read articles
Steps to Complete the Week 7 Lab
Step 1: Find these articles in the Chamberlain Library. Once you click each link, you will be logged into the Library and then click on "PDF Full Text".
First Article: Confidence Intervals, Part 1 (Links to an external site.) (Links to an external site.)Links to an external site. (Links to an external site.)
Second Article: Confidence Intervals, Part 2 (Links to an external site.) (Links to an external site.)Links to an external site. (Links to an external site.)
Step 2: Consider the use of confidence intervals in health sciences with these articles as inspiration and insights.
Step 3: Using the data you collected for the Week 5 Lab (heights of 10 different people that you work with), discuss your method of collection for the values that you are using in your study. What are some faults with this type of data collection? What other type of data collection could you have used, and how might this have affected your study?
Step 4: Now use the Week 6 Spreadsheet (Links to an external site.) to help you with calculations for the following questions/statements.
Give a point estimate for the average height of all people at the place where you work. Start by putting the ten heights you are working with into the blue Data column of the spreadsheet. What is your point estimate, and what does this mean?
Find a 95% confidence interval for the true mean height of all the people at your place of work. What is the interval?
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 inches and 68 inches").
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
Step 5: Now, find a 99% confidence interval for the same data. Would the margin of error be larger or smaller for the 99% CI? Explain your reasoning.
Step 6: Save the Week 7 Lab document with your answers and include your name in the title.
Step 7: Submit the document.
Grading
This activity will be graded based on the Week 7 Lab Rubric.
Course Outcomes (CO): 8
Due Date: By 11:59 p.m. MT on Sunday
Rubric
Week 7 Assignment: Lab
Week 7 Assignment: Lab
Criteria
Ratings
Pts
This criterion is linked to a Learning Outcome Data Collection and Pitfalls Range
12.0 pts Proficient Lab includes all of the following: *10 data points/heights *method of collection *faults with method of collection used *a different method of collection
10.2 pts Above Average Lab includes 3 out of 4 of the following: *10 data points/heights *method of collection *faults with method of collection used *a different method of collection
8.4 pts Average Lab includes 2 out of 4 of the following: *10 data points/heights *method of collection *faults with method of collection used *a different method of collection
6.6 pts Needs Improvement Lab includes 1 out of 4 of the following: *10 data points/heights *method of collection *faults with method of collection used *a different method of collection
0.0 pts No Effort
12.0 pts
This criterion is linked to a Learning Outcome Estimate a Confidence Interval
15.0 pts Proficient Lab includes all of the following: *point estimate *95% confidence interval *screenshot of Excel spreadsheet *practical interpretation on confidence interval
12.75 pts Above Average Lab includes 3 out of 4 of the following: *point estimate *95% confidence interval *screenshot of Excel spreadsheet *practical interpretation on confidence interval
10.5 pts Average Lab includes 2 out of 4 of the following: *point estimate *95% confidence interval *screenshot of Excel spreadsheet *practical interpretation on confidence interval
8.25 pts Needs Improvement Lab includes 1 out of 4 of the following: *point estimate *95% confidence interval *screenshot of Excel spreadsheet *practical interpretation on confidence interval
0.0 pts No Effort
15.0 pts
This criterion is linked to a Learning Outcome Interpret a Confidence Interval
15.0 pts Proficient Lab addresses all of the following well *a 99% confidence interval *comparison of margins of error for 99% and 95% *explanation of reasoning
12.75 pts Above Average Lab addresses 2 out of 3 of the following well *a 99% confidence interval *comparison of margins of error for 99% and 95% *explanation of reasoning
10.5 pts Average Lab addresses 1 out of 3 of the following well *a 99% confidence interval *comparison of margins of error for 99% and 95% *explanation of reasoning
8.25 pts Needs Improvement Lab mentions but does not explain fully any of the following *a 99% confidence interval *comparison of margins of error for 99% and 95% *explanation of reasoning
0.0 pts No Effort
15.0 pts
This criterion is linked to a Learning Outcome Grammar and Formatting
8.0 pts Proficient Lab is easy to read and presents material in a logical order with no grammatical errors.
6.8 pts Above Average Lab is easy to read and presents material in a logical order. There are a few grammatical errors but they do not distract from readability.
5.6 pts Average Lab is easy to read and has few grammatical errors, but it is not logically organized.
4.4 pts Needs Improvement There are significant grammatical errors and organizational issues that distract from readability.
0.0 pts No Effort
8.0 pts
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Most Popular Content
You randomly survey people in the mall about whether or not they regularly use text messaging. The results are shown in the tally sheets below based on the people’s ages.
1. You randomly survey people in the mall about whether or not they
regularly use text messaging. The results are shown ...
You randomly survey people in the mall about whether or not they regularly use text messaging. The results are shown in the tally sheets below based on the people’s ages.
1. You randomly survey people in the mall about whether or not they
regularly use text messaging. The results are shown in the tally sheets
below based on the people’s ages.a. Make a two-way table that includes the marginal frequencies.b. Make a two-way table that shows both the joint and marginal relative frequencies. Round to the nearest hundredth, if necessary.c. What is the probability that someone who is between the ages of 20-29 also texts regularly?d. What is the probability that someone who is between the ages of 40-49 also texts regularly?e. Does the data show a relationship between age and texting? Explain.2. The data below represents the number of hits on your web site over 10 months.a. Make a scatter plot of ln y versus x. Use the scatter plot to find the equation for the line of best fit.b. Make a scatter plot of ln y versus ln x. Use the scatter plot to find the equation for the line of best fit.c. Based on your answers in part a and b, would an exponential model or a power model be better to represent this data? Explain.d. Use your answers from parts a and b to find an exponential model and a power model to represent this data by hand.e. Use the regression feature on your calculator to find an exponential model and a power model to represent this data.f. Use your answer from parts c and d to make the best estimate for the number of hits your web site will have in 12 months.
26 pages
Derivable3
Adult Basic and Secondary Education and Literacy Teachers and Instructors Agents and Business Managers of Artists, Perform ...
Derivable3
Adult Basic and Secondary Education and Literacy Teachers and Instructors Agents and Business Managers of Artists, Performers, and Athletes Control ...
4 pages
MA215 Grantham Week 1 Business Statistics Quiz Help
The collection of all elements of interest in a particular study is A portion of the population selected to represent the ...
MA215 Grantham Week 1 Business Statistics Quiz Help
The collection of all elements of interest in a particular study is A portion of the population selected to represent the population is called
Chamberlain College of Nursing Confidence Intervals Lab Report
MATH225N-61306
Modules
Week 7 Assignment: Lab
March 2020
Home
Syllabus
Announcements
Resources
Mo ...
Chamberlain College of Nursing Confidence Intervals Lab Report
MATH225N-61306
Modules
Week 7 Assignment: Lab
March 2020
Home
Syllabus
Announcements
Resources
Modules
Files
Grades
People
Bookstore
Library Guides
Media Gallery
My Media
New Webex
Academic Support
Week 7 Assignment: Lab
Due Apr 19 by 11:59pm
Points 50
Submitting a file upload
Required Resources
Read/review the following resources for this activity:
OpenStax Textbook: Chapter 8
Lesson
Chamberlain University Library
Scenario/Summary
The highlight of this week's lab is confidence intervals and the use of these intervals in the health sciences. There is a short reading that specifically relates confidence intervals to health sciences and then you are asked to demonstrate your knowledge of confidence intervals by applying them in a practical manner.
Deliverables
The deliverable is a Word document with your answers to the questions posed below based on the article you find.
Required Software
Microsoft Word
Internet access to read articles
Steps to Complete the Week 7 Lab
Step 1: Find these articles in the Chamberlain Library. Once you click each link, you will be logged into the Library and then click on "PDF Full Text".
First Article: Confidence Intervals, Part 1 (Links to an external site.) (Links to an external site.)Links to an external site. (Links to an external site.)
Second Article: Confidence Intervals, Part 2 (Links to an external site.) (Links to an external site.)Links to an external site. (Links to an external site.)
Step 2: Consider the use of confidence intervals in health sciences with these articles as inspiration and insights.
Step 3: Using the data you collected for the Week 5 Lab (heights of 10 different people that you work with), discuss your method of collection for the values that you are using in your study. What are some faults with this type of data collection? What other type of data collection could you have used, and how might this have affected your study?
Step 4: Now use the Week 6 Spreadsheet (Links to an external site.) to help you with calculations for the following questions/statements.
Give a point estimate for the average height of all people at the place where you work. Start by putting the ten heights you are working with into the blue Data column of the spreadsheet. What is your point estimate, and what does this mean?
Find a 95% confidence interval for the true mean height of all the people at your place of work. What is the interval?
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 inches and 68 inches").
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
Step 5: Now, find a 99% confidence interval for the same data. Would the margin of error be larger or smaller for the 99% CI? Explain your reasoning.
Step 6: Save the Week 7 Lab document with your answers and include your name in the title.
Step 7: Submit the document.
Grading
This activity will be graded based on the Week 7 Lab Rubric.
Course Outcomes (CO): 8
Due Date: By 11:59 p.m. MT on Sunday
Rubric
Week 7 Assignment: Lab
Week 7 Assignment: Lab
Criteria
Ratings
Pts
This criterion is linked to a Learning Outcome Data Collection and Pitfalls Range
12.0 pts Proficient Lab includes all of the following: *10 data points/heights *method of collection *faults with method of collection used *a different method of collection
10.2 pts Above Average Lab includes 3 out of 4 of the following: *10 data points/heights *method of collection *faults with method of collection used *a different method of collection
8.4 pts Average Lab includes 2 out of 4 of the following: *10 data points/heights *method of collection *faults with method of collection used *a different method of collection
6.6 pts Needs Improvement Lab includes 1 out of 4 of the following: *10 data points/heights *method of collection *faults with method of collection used *a different method of collection
0.0 pts No Effort
12.0 pts
This criterion is linked to a Learning Outcome Estimate a Confidence Interval
15.0 pts Proficient Lab includes all of the following: *point estimate *95% confidence interval *screenshot of Excel spreadsheet *practical interpretation on confidence interval
12.75 pts Above Average Lab includes 3 out of 4 of the following: *point estimate *95% confidence interval *screenshot of Excel spreadsheet *practical interpretation on confidence interval
10.5 pts Average Lab includes 2 out of 4 of the following: *point estimate *95% confidence interval *screenshot of Excel spreadsheet *practical interpretation on confidence interval
8.25 pts Needs Improvement Lab includes 1 out of 4 of the following: *point estimate *95% confidence interval *screenshot of Excel spreadsheet *practical interpretation on confidence interval
0.0 pts No Effort
15.0 pts
This criterion is linked to a Learning Outcome Interpret a Confidence Interval
15.0 pts Proficient Lab addresses all of the following well *a 99% confidence interval *comparison of margins of error for 99% and 95% *explanation of reasoning
12.75 pts Above Average Lab addresses 2 out of 3 of the following well *a 99% confidence interval *comparison of margins of error for 99% and 95% *explanation of reasoning
10.5 pts Average Lab addresses 1 out of 3 of the following well *a 99% confidence interval *comparison of margins of error for 99% and 95% *explanation of reasoning
8.25 pts Needs Improvement Lab mentions but does not explain fully any of the following *a 99% confidence interval *comparison of margins of error for 99% and 95% *explanation of reasoning
0.0 pts No Effort
15.0 pts
This criterion is linked to a Learning Outcome Grammar and Formatting
8.0 pts Proficient Lab is easy to read and presents material in a logical order with no grammatical errors.
6.8 pts Above Average Lab is easy to read and presents material in a logical order. There are a few grammatical errors but they do not distract from readability.
5.6 pts Average Lab is easy to read and has few grammatical errors, but it is not logically organized.
4.4 pts Needs Improvement There are significant grammatical errors and organizational issues that distract from readability.
0.0 pts No Effort
8.0 pts
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