Description
the circumference of a circle is 11 pi. what is the are, in square inches, of the circle? express your answer in terms of pi
User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.
Explanation & Answer
The circumference C = 2 pi r, where r is the radius of the circle, hence, r = 11 pi / 2 pi = 11/2 = 5.5 in as it seems to be the unit in which C is measured.
The area of the circle A = pi r^2 = pi 5.5^2 = 30.25 pi in^2 (approximately 95.0 in^2).
Completion Status:
100%
Review
Review
Anonymous
Excellent! Definitely coming back for more study materials.
Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4
24/7 Homework Help
Stuck on a homework question? Our verified tutors can answer all questions, from basic math to advanced rocket science!
Most Popular Content
WU Interpreting the Nonconformity Control Charts Essay
For this Assignment, review the resources for this week that are specific to attribute control charts. You should focus on ...
WU Interpreting the Nonconformity Control Charts Essay
For this Assignment, review the resources for this week that are specific to attribute control charts. You should focus on mimicking the development of c and u charts as demonstrated in the resources for this week.
The Assignment: (3–4 pages)
Using SPSS and Microsoft Word, complete problems 1 through 5 on pages 330–331 in the Ross textbook. Show all work. Submit both your SPSS and Word files for grading.
Required Readings
Ross, T. K. (2014). Health care quality management: Tools and applications. San Francisco, CA: Jossey-Bass.
Chapter 8, "Statistical Process Control for Monitoring Nonconformities” (pp. 301–332)
U.S. Department of Commerce, National Institute of Standards and Technology. (2016). NIST/SEMATECH e-handbook of statistical methods. Retrieved from http://www.itl.nist.gov/div898/handbook
Chapter 6.3.3, “Attributes Control Charts”
Emmanuel, J. (2015a). SPC 4: c-chart (control chart for number defective). Retrieved from https://www.youtube.com/watch?v=RvEjgsYkTZk
PROBLEMS 1. A hospital introduced hip protectors to reduce the frequency of injury-producing patient falls. The hip protectors were introduced in July. The following table records the number of injury-producing falls from January through December. Create and interpret a c chart for patient falls. Were the hip protectors effective in reducing injury-producing patient falls?
s Month Falls Jan 5 Jul 3 Feb 5 Aug 3 Mar 3 Sep 2 Apr 4 Oct 2 May 2 Nov 3 Jun 2 Dec 3
2. The director of medical records conducts a monthly audit of 50 medical records to iden- tify coding errors. The Chapter 08.xls, Problem 08–02 tab records the data. National sta- tistics indicate that approximately 15% of medical records contain errors, and in the past the director has found multiple errors in a single record. Create a c chart to analyze perfor- mance. Interpret the department’s performance based on your control chart and identify any issues that should be investigated. Is the department doing a good job?
3. The chief medical officer is concerned that the long lengths of stay at her hospital may be the result of missed oxygen treatments. She has enacted a program to reduce the number of missed treatments. The Chapter08.xls, Problem 08–03 tab, records the number of missed oxygen treatments over the last 40 weeks. The improvement program was introduced in week 20. Was the program effective?
4. Implementing regular nursing rounds has been demonstrated to increase patient satisfac- tion and reduce patient falls. A hospital has collected data on ten patients per month over the past 24 months. The first twelve months the hospital did not have a formal rounding system. During the second period nurses were required to make rounds on an hourly basis from 8:00 AM through 8:00 PM and every two hours from 8:00 PM to 8:00 AM. The Chapter 08.xls, Problem 08–04 tab displays the number of call lights received per day for the ten- patient sample. Create a c chart to determine the effect of the rounding system on the use of call lights. Did the rounding program reduce patients’ use of call lights? Are there any issues that should be investigated?
5. To supplement their patient satisfaction survey, End Result Hospital conducts in-depth tele- phone interviews of past patients. The interviews are based on a 1% sample of the completed surveys from the prior month. The sample varies widely due to differences in monthly admis- sions, the rate at which surveys are completed, and the willingness of patients to participate in the telephone interview. The Chapter 08.xls, Problem 08–05 tab records the total number of the patients’ concerns noted by the interviewers. These concerns range from the effective- ness of medical treatment to the cleanliness and comfort of the patient room and ease of parking. The interviewer addresses the same items found on the patient satisfaction survey, solicits additional information for any item on which the patient indicated performance was less than “Good” or “Very Good,” and provides the patient with the opportunity to voice any other concerns. Create a control chart to summarize the results. Are patient concerns stable?
Forum. Parabolic shapes in the real world.
Dera Tutors,please help with Algebra forum.Assignment:This is an opportunity to explore occurrences of parabolas in the wo ...
Forum. Parabolic shapes in the real world.
Dera Tutors,please help with Algebra forum.Assignment:This is an opportunity to explore occurrences of parabolas in the world around us. Parabolic shapes in the real worldAccording to Wikipedia, that great internet source of both information and misinformation, "In nature, approximations of parabolas and paraboloids are found in many diverse situations."Research ONE example of a parabola in real life that has not already been used by a classmate.Tell us in your own words about your parabolic find (at least 150 words). Do not just make this up off the top of your head. The St Louis Arch, for example, is NOT a parabola—it is an inverted catenary.To get credit for this Forum, you must cite a source confirming that your example is, indeed, parabolic and not some other more exotic curve. Using a personal example (My eyebrow) will not count unless you can cite a source verifying that eyebrows are parabolic.Please, DO NOT use examples listed below:Roller Coasters, Ballistics, Angry Bird Parabola, Parabolic Microphones, Golden Gate Bridge , Path of an Object, Car Headlights, Fountain at Detroit Airport.
RSCH 8210/7210/6210 Walden University Testing for One-Way ANOVA Paper
Write a 2- to 3-paragraph analysis of your one-way ANOVA results for your research question. Do not forget to evaluate if ...
RSCH 8210/7210/6210 Walden University Testing for One-Way ANOVA Paper
Write a 2- to 3-paragraph analysis of your one-way ANOVA results for your research question. Do not forget to evaluate if the assumptions of the test are met. Include any post-hoc tests with an analysis of the strength of any relationship found (effect size). Also, in your analysis, display the data for the output. Based on your results, provide an explanation of what the implications of social change might be.
The Importance of Relationships
Discussion: The Importance of RelationshipsAs its name implies, confidence intervals provide a range of values, along with ...
The Importance of Relationships
Discussion: The Importance of RelationshipsAs its name implies, confidence intervals provide a range of values, along with a level of confidence, to serve as an estimate of some unknown population value. Since it is rare to have access to the entire population, you must frequently rely on the confidence interval of the sample to make some inference about the population of interest. Before making accurate inferences to the population, we need to fully understand how the three key components of the interval—variability in the data, sample size, and confidence level—impact the width of the interval.For this Discussion, you will explore the relationship between these components and understand the trade-off between reducing risk in our confidence of estimates and increasing precision.To prepare for this Discussion:Review Chapters 6 and 7 of the Frankfort-Nachmias & Leon-Guerrero text and in Chapter 8, p. 256, consider the 2012 Benghazi Terrorist Attack Investigation and focus on how different levels of confidence and sample size work together.Review Magnusson’s web blog found in the Learning Resources to further your visualization and understanding of confidence intervals.Use the Course Guide and Assignment Help found in this week’s Learning Resources to search for a quantitative article related to confidence intervals.Using the SPSS software, General Social Survey dataset and choose a quantitative variable that interests you.By Day 3Using SPSS:Take a random sample of 100.Calculate the 95% confidence interval for the variable.Calculate a 90% confidence interval.Take another random sample of 400.Calculate the 95% confidence interval for the variable.Calculate a 90% confidence interval.Post your results and an explanation of how different levels of confidence and sample size affect the width of the confidence interval. Next, consider the statement, “Confidence intervals are underutilized” and explain what the implications might be of using or not using confidence intervals. Provide examples based on the results of your data. Also, use your research to support your findings.Be sure to support your Main Post and Response Post with reference to the week’s Learning Resources and other scholarly evidence in APA Style.
MA215 Grantham University Week 5 Average Confidence Interval Paper
Week 5 AssignmentQuestion 1In a poll of 725 voters in a campaign to eliminate non-returnable beverage containers, 510 of t ...
MA215 Grantham University Week 5 Average Confidence Interval Paper
Week 5 AssignmentQuestion 1In a poll of 725 voters in a campaign to eliminate non-returnable beverage containers, 510 of the voters were opposed. Develop a 95% confidence interval estimate for the proportion of all the voters who opposed the container control bill.Question 2A random sample of 25 airline pilots had an average yearly income of $101,600 with a sample standard deviation of $10,000.If we want to determine a 99% confidence interval for the average yearly income, what is the value of t?What wording in the prompt tells us to use t instead of z?Develop a 99% confidence interval for the average yearly income of all pilots.Question 3In order to determine the average weight of carry-on luggage by passengers in airplanes, a sample of 425 pieces of carry-on luggage was collected and weighed. The average weight was 17 pounds. Assume that we know the standard deviation of the population to be 2.75 pounds.Determine a 90% confidence interval estimate for the mean weight of the carry-on luggage.What wording in the prompt gave away the type of test (z or t) that this should be?Question 4A statistician employed by a consumer testing organization reports that at 90% confidence he has determined that the true average content of the Uncola soft drinks is between 11.8 to 12.2 ounces. He further reports that his sample revealed an average content of 12 ounces, but he forgot to report the size of the sample he had selected. Assuming the standard deviation of the population is 0.72, determine the size of the sample.Hint from Dr. Klotz: Have you visited this week's Notations and Symbols to align the formulas with these problems? Grading Criteria AssignmentsMaximum PointsMeets or exceeds established assignment criteria40Demonstrates an understanding of lesson concepts20Clearly presents well-reasoned ideas and concepts30Uses proper mechanics, punctuation, sentence structure, and spelling10Total100
CCF MOD 12 Apply Statistic Inferences for Count Data Questions
Please answer questions in the document. ( Type directly into the attachment, copy and paste R-code instead of screenshots ...
CCF MOD 12 Apply Statistic Inferences for Count Data Questions
Please answer questions in the document. ( Type directly into the attachment, copy and paste R-code instead of screenshots)
Similar Content
Algebra math questions
Algebra questions.docx...
math question
I need someone to help me with my math homework. Its on algebra 2 and has 10 questions .I need someone to help me with my ...
multi choice question
...
Bisector said of triangles
I would like help with geometric proofs, and perpendicular bisector theorem....
determine whether the integral is convergent or divergent integral from 0 to 1 (e^x)/(e^x) -1 is improper.investigate the convergency?
determine whether the integral is convergent or divergent integral from 0 to 1 (e^x)/(e^x) -1 is improper.investigate the ...
What is the least common multiple of the denominators in the equation: 9 3/4x=7/8x-10
What is the least common multiple of the denominators in the equation: 9+3/4x=7/8x-10...
Related Tags
Book Guides
Get 24/7
Homework help
Our tutors provide high quality explanations & answers.
Post question
Most Popular Content
WU Interpreting the Nonconformity Control Charts Essay
For this Assignment, review the resources for this week that are specific to attribute control charts. You should focus on ...
WU Interpreting the Nonconformity Control Charts Essay
For this Assignment, review the resources for this week that are specific to attribute control charts. You should focus on mimicking the development of c and u charts as demonstrated in the resources for this week.
The Assignment: (3–4 pages)
Using SPSS and Microsoft Word, complete problems 1 through 5 on pages 330–331 in the Ross textbook. Show all work. Submit both your SPSS and Word files for grading.
Required Readings
Ross, T. K. (2014). Health care quality management: Tools and applications. San Francisco, CA: Jossey-Bass.
Chapter 8, "Statistical Process Control for Monitoring Nonconformities” (pp. 301–332)
U.S. Department of Commerce, National Institute of Standards and Technology. (2016). NIST/SEMATECH e-handbook of statistical methods. Retrieved from http://www.itl.nist.gov/div898/handbook
Chapter 6.3.3, “Attributes Control Charts”
Emmanuel, J. (2015a). SPC 4: c-chart (control chart for number defective). Retrieved from https://www.youtube.com/watch?v=RvEjgsYkTZk
PROBLEMS 1. A hospital introduced hip protectors to reduce the frequency of injury-producing patient falls. The hip protectors were introduced in July. The following table records the number of injury-producing falls from January through December. Create and interpret a c chart for patient falls. Were the hip protectors effective in reducing injury-producing patient falls?
s Month Falls Jan 5 Jul 3 Feb 5 Aug 3 Mar 3 Sep 2 Apr 4 Oct 2 May 2 Nov 3 Jun 2 Dec 3
2. The director of medical records conducts a monthly audit of 50 medical records to iden- tify coding errors. The Chapter 08.xls, Problem 08–02 tab records the data. National sta- tistics indicate that approximately 15% of medical records contain errors, and in the past the director has found multiple errors in a single record. Create a c chart to analyze perfor- mance. Interpret the department’s performance based on your control chart and identify any issues that should be investigated. Is the department doing a good job?
3. The chief medical officer is concerned that the long lengths of stay at her hospital may be the result of missed oxygen treatments. She has enacted a program to reduce the number of missed treatments. The Chapter08.xls, Problem 08–03 tab, records the number of missed oxygen treatments over the last 40 weeks. The improvement program was introduced in week 20. Was the program effective?
4. Implementing regular nursing rounds has been demonstrated to increase patient satisfac- tion and reduce patient falls. A hospital has collected data on ten patients per month over the past 24 months. The first twelve months the hospital did not have a formal rounding system. During the second period nurses were required to make rounds on an hourly basis from 8:00 AM through 8:00 PM and every two hours from 8:00 PM to 8:00 AM. The Chapter 08.xls, Problem 08–04 tab displays the number of call lights received per day for the ten- patient sample. Create a c chart to determine the effect of the rounding system on the use of call lights. Did the rounding program reduce patients’ use of call lights? Are there any issues that should be investigated?
5. To supplement their patient satisfaction survey, End Result Hospital conducts in-depth tele- phone interviews of past patients. The interviews are based on a 1% sample of the completed surveys from the prior month. The sample varies widely due to differences in monthly admis- sions, the rate at which surveys are completed, and the willingness of patients to participate in the telephone interview. The Chapter 08.xls, Problem 08–05 tab records the total number of the patients’ concerns noted by the interviewers. These concerns range from the effective- ness of medical treatment to the cleanliness and comfort of the patient room and ease of parking. The interviewer addresses the same items found on the patient satisfaction survey, solicits additional information for any item on which the patient indicated performance was less than “Good” or “Very Good,” and provides the patient with the opportunity to voice any other concerns. Create a control chart to summarize the results. Are patient concerns stable?
Forum. Parabolic shapes in the real world.
Dera Tutors,please help with Algebra forum.Assignment:This is an opportunity to explore occurrences of parabolas in the wo ...
Forum. Parabolic shapes in the real world.
Dera Tutors,please help with Algebra forum.Assignment:This is an opportunity to explore occurrences of parabolas in the world around us. Parabolic shapes in the real worldAccording to Wikipedia, that great internet source of both information and misinformation, "In nature, approximations of parabolas and paraboloids are found in many diverse situations."Research ONE example of a parabola in real life that has not already been used by a classmate.Tell us in your own words about your parabolic find (at least 150 words). Do not just make this up off the top of your head. The St Louis Arch, for example, is NOT a parabola—it is an inverted catenary.To get credit for this Forum, you must cite a source confirming that your example is, indeed, parabolic and not some other more exotic curve. Using a personal example (My eyebrow) will not count unless you can cite a source verifying that eyebrows are parabolic.Please, DO NOT use examples listed below:Roller Coasters, Ballistics, Angry Bird Parabola, Parabolic Microphones, Golden Gate Bridge , Path of an Object, Car Headlights, Fountain at Detroit Airport.
RSCH 8210/7210/6210 Walden University Testing for One-Way ANOVA Paper
Write a 2- to 3-paragraph analysis of your one-way ANOVA results for your research question. Do not forget to evaluate if ...
RSCH 8210/7210/6210 Walden University Testing for One-Way ANOVA Paper
Write a 2- to 3-paragraph analysis of your one-way ANOVA results for your research question. Do not forget to evaluate if the assumptions of the test are met. Include any post-hoc tests with an analysis of the strength of any relationship found (effect size). Also, in your analysis, display the data for the output. Based on your results, provide an explanation of what the implications of social change might be.
The Importance of Relationships
Discussion: The Importance of RelationshipsAs its name implies, confidence intervals provide a range of values, along with ...
The Importance of Relationships
Discussion: The Importance of RelationshipsAs its name implies, confidence intervals provide a range of values, along with a level of confidence, to serve as an estimate of some unknown population value. Since it is rare to have access to the entire population, you must frequently rely on the confidence interval of the sample to make some inference about the population of interest. Before making accurate inferences to the population, we need to fully understand how the three key components of the interval—variability in the data, sample size, and confidence level—impact the width of the interval.For this Discussion, you will explore the relationship between these components and understand the trade-off between reducing risk in our confidence of estimates and increasing precision.To prepare for this Discussion:Review Chapters 6 and 7 of the Frankfort-Nachmias & Leon-Guerrero text and in Chapter 8, p. 256, consider the 2012 Benghazi Terrorist Attack Investigation and focus on how different levels of confidence and sample size work together.Review Magnusson’s web blog found in the Learning Resources to further your visualization and understanding of confidence intervals.Use the Course Guide and Assignment Help found in this week’s Learning Resources to search for a quantitative article related to confidence intervals.Using the SPSS software, General Social Survey dataset and choose a quantitative variable that interests you.By Day 3Using SPSS:Take a random sample of 100.Calculate the 95% confidence interval for the variable.Calculate a 90% confidence interval.Take another random sample of 400.Calculate the 95% confidence interval for the variable.Calculate a 90% confidence interval.Post your results and an explanation of how different levels of confidence and sample size affect the width of the confidence interval. Next, consider the statement, “Confidence intervals are underutilized” and explain what the implications might be of using or not using confidence intervals. Provide examples based on the results of your data. Also, use your research to support your findings.Be sure to support your Main Post and Response Post with reference to the week’s Learning Resources and other scholarly evidence in APA Style.
MA215 Grantham University Week 5 Average Confidence Interval Paper
Week 5 AssignmentQuestion 1In a poll of 725 voters in a campaign to eliminate non-returnable beverage containers, 510 of t ...
MA215 Grantham University Week 5 Average Confidence Interval Paper
Week 5 AssignmentQuestion 1In a poll of 725 voters in a campaign to eliminate non-returnable beverage containers, 510 of the voters were opposed. Develop a 95% confidence interval estimate for the proportion of all the voters who opposed the container control bill.Question 2A random sample of 25 airline pilots had an average yearly income of $101,600 with a sample standard deviation of $10,000.If we want to determine a 99% confidence interval for the average yearly income, what is the value of t?What wording in the prompt tells us to use t instead of z?Develop a 99% confidence interval for the average yearly income of all pilots.Question 3In order to determine the average weight of carry-on luggage by passengers in airplanes, a sample of 425 pieces of carry-on luggage was collected and weighed. The average weight was 17 pounds. Assume that we know the standard deviation of the population to be 2.75 pounds.Determine a 90% confidence interval estimate for the mean weight of the carry-on luggage.What wording in the prompt gave away the type of test (z or t) that this should be?Question 4A statistician employed by a consumer testing organization reports that at 90% confidence he has determined that the true average content of the Uncola soft drinks is between 11.8 to 12.2 ounces. He further reports that his sample revealed an average content of 12 ounces, but he forgot to report the size of the sample he had selected. Assuming the standard deviation of the population is 0.72, determine the size of the sample.Hint from Dr. Klotz: Have you visited this week's Notations and Symbols to align the formulas with these problems? Grading Criteria AssignmentsMaximum PointsMeets or exceeds established assignment criteria40Demonstrates an understanding of lesson concepts20Clearly presents well-reasoned ideas and concepts30Uses proper mechanics, punctuation, sentence structure, and spelling10Total100
CCF MOD 12 Apply Statistic Inferences for Count Data Questions
Please answer questions in the document. ( Type directly into the attachment, copy and paste R-code instead of screenshots ...
CCF MOD 12 Apply Statistic Inferences for Count Data Questions
Please answer questions in the document. ( Type directly into the attachment, copy and paste R-code instead of screenshots)
Earn money selling
your Study Documents