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Quality at A1 Hotels
A1 Hotels operates luxury hotels throughout the world. Recently, motivated by some incidents that appeared in the news, th ...
Quality at A1 Hotels
A1 Hotels operates luxury hotels throughout the world. Recently, motivated by some incidents that appeared in the news, they have been concerned about the quality of service. The company has been giving the following survey to its clients after their stay:How would you rate the quality of your room? Select one. Good(G), Poor(P)How would you rate the quality of your food? Select one. Good(G), Poor(P)How would you rate the quality of your service? Select one. Good (G), Poor(P)Any customer who answered “Poor” to at least one of the three questions up above is considered to be “dissatisfied.” Traditionally, 40% of customers have been dissatisfied.A1 Hotels would like to study customer satisfaction. Therefore, 200 survey responses were recently chosen at random for analysis. The complete data set is in the file named Hotels.Managerial ReportPrepare a report (see below) for A1 Hotels that summarizes your assessment of customer satisfaction. Be sure to include the following seven items in your report.To summarize the data, compute the proportion of all clients thatAnswered “Poor” to room quality.Answered “Poor” to food quality.Answered “Poor” to service quality.Develop the 92% confidence interval for the proportion of all recent clients that were “dissatisfied.” What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Develop the 92% confidence interval for the proportion of all recent clients who answered “Poor” to room quality. What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Develop the 92% confidence interval for the proportion of all recent clients who answered “Poor” to food quality. What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Develop the 92% confidence interval for the proportion of all recent clients who answered “Poor” to service quality. What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Conduct a hypothesis test (using either the p-Value Approach or the Critical Value Approach) to determine if the proportion of all recent clients is more dissatisfied than the traditional level of dissatisfaction. Use α = 0.08. Do not forget to include the correctly worded hypotheses and show all the steps required to conduct the hypothesis test.What advice would you give to A1 Hotels based upon your analysis of the data? What is the magnitude of the issue? How can this study be improved?Write a report that adheres to the Written Assignment Requirements under the heading “Expectations for CSU-Global Written Assignments” found in the CSU-Global Guide to Writing and APA Requirements. As with all written assignments at CSU-Global, you should have in-text citations and a reference page. An example paper is provided in the MTH410 Guide to Writing with Statistics. (link provided at the bottom of the page)Submit your Excel file in addition to your report.Requirements:Paper must be written in third person.Your paper should be four to five pages in length (counting the title page and references page) and cite and integrate at least one credible outside source. The CSU-Global Library is a great place to find resources.Include a title page, introduction, body, conclusion, and a reference page.The introduction should describe or summarize the topic or problem. It might discuss the importance of the topic or how it affects you or society as a whole, or it might discuss or describe the unique terminology associated with the topic.The body of your paper should answer the questions posed in the problem. Explain how you approached and answered the question or solved the problem, and, for each question, show all steps involved. Be sure this is in paragraph format, not numbered answers like a homework assignment.The conclusion should summarize your thoughts about what you have determined from the data and your analysis, often with a broader personal or societal perspective in mind. Nothing new should be introduced in the conclusion that was not previously discussed in the body paragraphs.Include any tables of data or calculations, calculated values, and/or graphs associated with this problem in the body of your assignment.Document formatting, citations, and style should conform to the CSU-Global Virtual Library CSU-Global Guide to Writing and APA: Introduction. A short summary containing much that you need to know about paper formatting, citations, and references is contained in the New Sample APA Paper. In addition, information in the CSU-Global Virtual Library under the Writing Center/APA Resources tab has many helpful areas (Writing Center, Writing Tips, Template & Examples/Papers & Essays, and others).
Cuyamaca College Statistics Lab Exam
Learn by DoingThis is the first of several mini-labs designed to teach you how to use StatCrunch. Later in the course, you ...
Cuyamaca College Statistics Lab Exam
Learn by DoingThis is the first of several mini-labs designed to teach you how to use StatCrunch. Later in the course, you will be expected to complete more extensive labs and in-class quizzes/exams using the skills learned in these early mini-labs.Some features of this activity may not work well on a cell phone or tablet. We highly recommend that you complete this activity on a computer.Here are the directions, grading rubric, and definition of high-quality feedback for the Learn by Doing discussion board exercises. A list of StatCrunch directions is provided at the bottom of this page. But, here is a brief introduction to the statistical software on how to upload data.ContextWe will use the Best Actor Oscar winners (1970–2001) data file to learn how to create a histogram using StatCrunch, and to practice what we've learned about describing a histogram. We are interested in describing the distribution of actors' ages when they won the Best Actor Oscar.DataStart by downloading the actor datafile to your computer.Here are the directions for downloading the datafile.Here is the actor (Links to an external site.) datafile. (This is the "Excel" file.)Next you will create a histogram of the ages of Best Oscar winners and upload your histogram to your Stats-Class folder in Canvas. Here are the steps.Login and open StatCrunch (directions).Upload the ages data file to StatCrunch (directions).Create a histogram of the ages of Best Actor Oscar winners (directions).Download the StatCrunch output window, your histogram (directions).Store your histogram (the .png file) in your Stats-Class folder (directions).PromptIn your initial post, respond to the following discussion prompt. Describe the distribution of ages of the Best Actor Oscar winners. Your description should include: shape, center (a typical representative age), a typical interval of representative ages, spread (overall range of ages), and any outliers (unusual ages). Be sure to embed your histogram in your initial post (directions). Please do not submit your histogram as an attachment.Create a second histogram for the distribution of ages, and adjust the bin width (directions). Try both smaller and larger bin widths. Choose a bin width so that your second histogram does not look like the first. Upload your second histogram to your Stats-Class folder. Also embed your second histogram with your initial post. Indicate which histogram is better for analyzing the data (your first embedded histogram or your second). Explain why.List of StatCrunch DirectionsEach link will open in a new window. To return to this discussion, either close the new tab or select the tab for this discussion. Create Your Stats-Class Folder in Canvas (You only need to do this once.)Purchase StatCrunch (You only need to do this once.)Open StatCrunchDownload Excel Data FileUpload Excel Data File to StatCrunchDownload StatCrunch Output Window (no screenshots; please use these directions)Upload Files into Your Stat-Class Folder in CanvasEmbed Pictures in a Discussion Post (no attachments; please use these directions)Create a HistogramAdjust Histogram Bin WidthHere is a PDF document with all StatCrunch directions (Links to an external site.).
Multiple logistic regression in action, statistics homework help
Assignment: Multiple Logistic Regression in ActionUse the Week 7 Dataset (SPSS document) from the Learning Resources area ...
Multiple logistic regression in action, statistics homework help
Assignment: Multiple Logistic Regression in ActionUse the Week 7 Dataset (SPSS document) from the Learning Resources area to complete this assignment. Variables and variable selection Use a table to list the variables, Sex, Age in Years, Serum Cholesterol, Obese, and Hypertension, and each of their levels of measurement. Create new variables Age_Cat and Chole_Cat: Age_Cat: Convert Age in Years into a categorical variable with 2 categories, Less than 40, 40 and greater Chole_Cat: Convert Serum Cholesterol into 3 categories, Under 200, 200-299, and 300 and greater Add the new variables to each record by coding the responses to the original variable using the assigned categories. Be sure that the variable view in SPSS has the correct information on the 2 new variables. Simple Binary Logistic Regression Use Hypertension as the dependent variable and Chole_Cat as the independent variable in the first model. Report the Odds Ratio and significance of the Odds Ratio for the relationship between the dependent and independent variables. Use Hypertension as the dependent variable and Serum Cholesterol (the original variable) as the independent variable in the second model. Report the Odds Ratio and significance of the Odds Ratio for the relationship between the dependent and independent variables. How does the level of measurement for the independent variable affect the outcome (include the OR and its significance in your response)? How does the level of measurement of the independent variable change your interpretation of the Odds Ratio? Multivariate Logistic Regression Run a multivariate binary logistic regression model using SPSS and Hypertension as the dependent variable, Chole_Cat, Age_Cat, Obese, and Sex as the Covariates. Include the output in your submission. Identify the Odds Ratio and the significance of the Odds Ratio for each of the covariates. How has the relationship between Chole_Cat and Hypertension changed with the addition of the other variables (compare to the output from # 2a)? Test the assumption that the model fits the data using the Hosmer-Lemeshow Goodness of Fit test. Interpret the Chi Square statistic given in the output of this test and state what it means in terms of the assumptions needed to use logistic regression with this data. Rerun the logistic regression model from #3a and use the save function to create the following new variables: Predicted Probabilities, Deviance Residuals, and Cook’s Distance. Evaluate the model using these saved variables and the following Scatter Plots. Create a Scatter Plot of the Deviance Residuals (DEV) and the variable ID: Are there any outliers? What does this mean when evaluating your model? Create a Scatter Plot of Cook’s Distance (COO) and the variable ID: Are there any influential cases? What does this mean when evaluating your model? Create a Scatter Plot of Deviance (DEV) and the Predicted Probabilities (PRE). Discuss whether anything in this scatterplot could cause you some concern in terms of your model. ResourcesDaniel, WW & Cross, CL. (2013). Biostatistics: A Foundation for Analysis in the Health Sciences. Hoboken, NJ: Wiley.Chapter 11, “ Regression Analysis: Some Additional Techniques” ( pp. 539 –599)
ST 352 OSU What Is the Response Variable and What Is the Explanatory Variable Ques
I need step-by-step solutions for all the questions in the attached assignment.Thanks :)
ST 352 OSU What Is the Response Variable and What Is the Explanatory Variable Ques
I need step-by-step solutions for all the questions in the attached assignment.Thanks :)
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Quality at A1 Hotels
A1 Hotels operates luxury hotels throughout the world. Recently, motivated by some incidents that appeared in the news, th ...
Quality at A1 Hotels
A1 Hotels operates luxury hotels throughout the world. Recently, motivated by some incidents that appeared in the news, they have been concerned about the quality of service. The company has been giving the following survey to its clients after their stay:How would you rate the quality of your room? Select one. Good(G), Poor(P)How would you rate the quality of your food? Select one. Good(G), Poor(P)How would you rate the quality of your service? Select one. Good (G), Poor(P)Any customer who answered “Poor” to at least one of the three questions up above is considered to be “dissatisfied.” Traditionally, 40% of customers have been dissatisfied.A1 Hotels would like to study customer satisfaction. Therefore, 200 survey responses were recently chosen at random for analysis. The complete data set is in the file named Hotels.Managerial ReportPrepare a report (see below) for A1 Hotels that summarizes your assessment of customer satisfaction. Be sure to include the following seven items in your report.To summarize the data, compute the proportion of all clients thatAnswered “Poor” to room quality.Answered “Poor” to food quality.Answered “Poor” to service quality.Develop the 92% confidence interval for the proportion of all recent clients that were “dissatisfied.” What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Develop the 92% confidence interval for the proportion of all recent clients who answered “Poor” to room quality. What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Develop the 92% confidence interval for the proportion of all recent clients who answered “Poor” to food quality. What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Develop the 92% confidence interval for the proportion of all recent clients who answered “Poor” to service quality. What is the margin of error? What are the lower (or left) and upper (or right) endpoints of the confidence interval? Interpret your results.Conduct a hypothesis test (using either the p-Value Approach or the Critical Value Approach) to determine if the proportion of all recent clients is more dissatisfied than the traditional level of dissatisfaction. Use α = 0.08. Do not forget to include the correctly worded hypotheses and show all the steps required to conduct the hypothesis test.What advice would you give to A1 Hotels based upon your analysis of the data? What is the magnitude of the issue? How can this study be improved?Write a report that adheres to the Written Assignment Requirements under the heading “Expectations for CSU-Global Written Assignments” found in the CSU-Global Guide to Writing and APA Requirements. As with all written assignments at CSU-Global, you should have in-text citations and a reference page. An example paper is provided in the MTH410 Guide to Writing with Statistics. (link provided at the bottom of the page)Submit your Excel file in addition to your report.Requirements:Paper must be written in third person.Your paper should be four to five pages in length (counting the title page and references page) and cite and integrate at least one credible outside source. The CSU-Global Library is a great place to find resources.Include a title page, introduction, body, conclusion, and a reference page.The introduction should describe or summarize the topic or problem. It might discuss the importance of the topic or how it affects you or society as a whole, or it might discuss or describe the unique terminology associated with the topic.The body of your paper should answer the questions posed in the problem. Explain how you approached and answered the question or solved the problem, and, for each question, show all steps involved. Be sure this is in paragraph format, not numbered answers like a homework assignment.The conclusion should summarize your thoughts about what you have determined from the data and your analysis, often with a broader personal or societal perspective in mind. Nothing new should be introduced in the conclusion that was not previously discussed in the body paragraphs.Include any tables of data or calculations, calculated values, and/or graphs associated with this problem in the body of your assignment.Document formatting, citations, and style should conform to the CSU-Global Virtual Library CSU-Global Guide to Writing and APA: Introduction. A short summary containing much that you need to know about paper formatting, citations, and references is contained in the New Sample APA Paper. In addition, information in the CSU-Global Virtual Library under the Writing Center/APA Resources tab has many helpful areas (Writing Center, Writing Tips, Template & Examples/Papers & Essays, and others).
Cuyamaca College Statistics Lab Exam
Learn by DoingThis is the first of several mini-labs designed to teach you how to use StatCrunch. Later in the course, you ...
Cuyamaca College Statistics Lab Exam
Learn by DoingThis is the first of several mini-labs designed to teach you how to use StatCrunch. Later in the course, you will be expected to complete more extensive labs and in-class quizzes/exams using the skills learned in these early mini-labs.Some features of this activity may not work well on a cell phone or tablet. We highly recommend that you complete this activity on a computer.Here are the directions, grading rubric, and definition of high-quality feedback for the Learn by Doing discussion board exercises. A list of StatCrunch directions is provided at the bottom of this page. But, here is a brief introduction to the statistical software on how to upload data.ContextWe will use the Best Actor Oscar winners (1970–2001) data file to learn how to create a histogram using StatCrunch, and to practice what we've learned about describing a histogram. We are interested in describing the distribution of actors' ages when they won the Best Actor Oscar.DataStart by downloading the actor datafile to your computer.Here are the directions for downloading the datafile.Here is the actor (Links to an external site.) datafile. (This is the "Excel" file.)Next you will create a histogram of the ages of Best Oscar winners and upload your histogram to your Stats-Class folder in Canvas. Here are the steps.Login and open StatCrunch (directions).Upload the ages data file to StatCrunch (directions).Create a histogram of the ages of Best Actor Oscar winners (directions).Download the StatCrunch output window, your histogram (directions).Store your histogram (the .png file) in your Stats-Class folder (directions).PromptIn your initial post, respond to the following discussion prompt. Describe the distribution of ages of the Best Actor Oscar winners. Your description should include: shape, center (a typical representative age), a typical interval of representative ages, spread (overall range of ages), and any outliers (unusual ages). Be sure to embed your histogram in your initial post (directions). Please do not submit your histogram as an attachment.Create a second histogram for the distribution of ages, and adjust the bin width (directions). Try both smaller and larger bin widths. Choose a bin width so that your second histogram does not look like the first. Upload your second histogram to your Stats-Class folder. Also embed your second histogram with your initial post. Indicate which histogram is better for analyzing the data (your first embedded histogram or your second). Explain why.List of StatCrunch DirectionsEach link will open in a new window. To return to this discussion, either close the new tab or select the tab for this discussion. Create Your Stats-Class Folder in Canvas (You only need to do this once.)Purchase StatCrunch (You only need to do this once.)Open StatCrunchDownload Excel Data FileUpload Excel Data File to StatCrunchDownload StatCrunch Output Window (no screenshots; please use these directions)Upload Files into Your Stat-Class Folder in CanvasEmbed Pictures in a Discussion Post (no attachments; please use these directions)Create a HistogramAdjust Histogram Bin WidthHere is a PDF document with all StatCrunch directions (Links to an external site.).
Multiple logistic regression in action, statistics homework help
Assignment: Multiple Logistic Regression in ActionUse the Week 7 Dataset (SPSS document) from the Learning Resources area ...
Multiple logistic regression in action, statistics homework help
Assignment: Multiple Logistic Regression in ActionUse the Week 7 Dataset (SPSS document) from the Learning Resources area to complete this assignment. Variables and variable selection Use a table to list the variables, Sex, Age in Years, Serum Cholesterol, Obese, and Hypertension, and each of their levels of measurement. Create new variables Age_Cat and Chole_Cat: Age_Cat: Convert Age in Years into a categorical variable with 2 categories, Less than 40, 40 and greater Chole_Cat: Convert Serum Cholesterol into 3 categories, Under 200, 200-299, and 300 and greater Add the new variables to each record by coding the responses to the original variable using the assigned categories. Be sure that the variable view in SPSS has the correct information on the 2 new variables. Simple Binary Logistic Regression Use Hypertension as the dependent variable and Chole_Cat as the independent variable in the first model. Report the Odds Ratio and significance of the Odds Ratio for the relationship between the dependent and independent variables. Use Hypertension as the dependent variable and Serum Cholesterol (the original variable) as the independent variable in the second model. Report the Odds Ratio and significance of the Odds Ratio for the relationship between the dependent and independent variables. How does the level of measurement for the independent variable affect the outcome (include the OR and its significance in your response)? How does the level of measurement of the independent variable change your interpretation of the Odds Ratio? Multivariate Logistic Regression Run a multivariate binary logistic regression model using SPSS and Hypertension as the dependent variable, Chole_Cat, Age_Cat, Obese, and Sex as the Covariates. Include the output in your submission. Identify the Odds Ratio and the significance of the Odds Ratio for each of the covariates. How has the relationship between Chole_Cat and Hypertension changed with the addition of the other variables (compare to the output from # 2a)? Test the assumption that the model fits the data using the Hosmer-Lemeshow Goodness of Fit test. Interpret the Chi Square statistic given in the output of this test and state what it means in terms of the assumptions needed to use logistic regression with this data. Rerun the logistic regression model from #3a and use the save function to create the following new variables: Predicted Probabilities, Deviance Residuals, and Cook’s Distance. Evaluate the model using these saved variables and the following Scatter Plots. Create a Scatter Plot of the Deviance Residuals (DEV) and the variable ID: Are there any outliers? What does this mean when evaluating your model? Create a Scatter Plot of Cook’s Distance (COO) and the variable ID: Are there any influential cases? What does this mean when evaluating your model? Create a Scatter Plot of Deviance (DEV) and the Predicted Probabilities (PRE). Discuss whether anything in this scatterplot could cause you some concern in terms of your model. ResourcesDaniel, WW & Cross, CL. (2013). Biostatistics: A Foundation for Analysis in the Health Sciences. Hoboken, NJ: Wiley.Chapter 11, “ Regression Analysis: Some Additional Techniques” ( pp. 539 –599)
ST 352 OSU What Is the Response Variable and What Is the Explanatory Variable Ques
I need step-by-step solutions for all the questions in the attached assignment.Thanks :)
ST 352 OSU What Is the Response Variable and What Is the Explanatory Variable Ques
I need step-by-step solutions for all the questions in the attached assignment.Thanks :)
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