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Solve the equation: 2x2 + 10x = 0 Check your solution(s) and state the final solution set. Show all your work
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2x^2+10x=0
2x(x+5)=0
2x=0
x=0
x+5=0
x=-5
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Week5 Discussion
Choose one of the following two prompts to respond to. In your two follow up posts, respond at least once to each prompt o ...
Week5 Discussion
Choose one of the following two prompts to respond to. In your two follow up posts, respond at least once to each prompt option. Use the discussion topic as a place to ask questions, speculate about answers, and share insights. Be sure to embed and cite your references for any supporting images.Option 1:Think of a problem that you may be interested in that deals with a comparison of two population means. Propose either a confidence interval or a hypothesis test question that compares these two means. Gather appropriate data and post your problem (without a solution) in the discussion topic. Once your initial post is complete, respond to your own post with the solution for others to check their work.Option 2:Think of a problem that you may be interested in that deals with a comparison of two population proportions. Propose either a confidence interval or a hypothesis test question that compares these two proportions. Gather appropriate data and post your problem (without a solution) in the discussion topic. Once your initial post is complete, respond to your own post with the solution for others to check their work.For your response to a classmate (two responses required):Pick two classmates to complete both of their sample test problems using a significance level not previously used for that specific classmate’s problem. Include the null and alternative hypothesis, alpha value, and write a conclusion. Make sure that you use appropriate terminology and specify whether you are using the classical method or the p-value method.For additional details, please refer to the Discussion Rubric document.
Phase 3 Hypothesis testing
This week you will begin working on Phase 3 of your course project.
Using the same data set and variables for your sele ...
Phase 3 Hypothesis testing
This week you will begin working on Phase 3 of your course project.
Using the same data set and variables for your selected topic that you
used for phases 1 and 2, add the following information to your
analysis:Discuss the process for hypothesis testing.
Explain the 8 steps of hypothesis testingWhen performing the 8 steps for hypothesis testing, which method do you prefer; P-Value method or Critical Value method? Why?Perform the hypothesis test. (Salaries):
Claim: The average salary for all
jobs in Minnesota is less than $65,000. Test the claim using α = 0.05
and assume your data is normally distributed and σ is unknown.
Based on your selected topic, perform and document the following steps:
Write the null and alternative hypothesis symbolically and identify which hypothesis is the claim.Is the test two-tailed, left-tailed, or right-tailed? Explain.Which test statistic will you use for your hypothesis test; z-test or t-test? Explain.What is the value of the test-statistic? Show your calculationWhat is the P-value? Explain how you determined it What is the critical value? Explain how you calculated itWhat is your decision? Reject the null or do not
reject the null? Explain why you made your decision including the
results for your p-value and the critical value.State the final conclusion in non-technical terms.
Please show your work for the construction of the test-statistic and explain your process for finding the p-value and critical value. You may use the Equation Editor to format your calculation steps on the Word document/ Attached is the word documents that will help with this assignment
Walden University Confidence Intervals and Afrobarometer Dataset Discussion Paper
In your Week 2 Assignment, you displayed data based on a categorical variable and continuous variable from a specific data ...
Walden University Confidence Intervals and Afrobarometer Dataset Discussion Paper
In your Week 2 Assignment, you displayed data based on a categorical variable and continuous variable from a specific dataset. In Week 3, you used the same variables as in Week 2 to perform a descriptive analysis of the data. For this Assignment, you will calculate a confidence interval in SPSS for one of the variables from your Week 2 and Week 3 Assignments.
To prepare for this Assignment:
Review the Learning Resources related to probability, sampling distributions, and confidence intervals.
For additional support, review the Skill Builder: Confidence Intervals and the Skill Builder: Sampling Distributions, which you can find by navigating back to your Blackboard Course Home Page. From there, locate the Skill Builder link in the left navigation pane.
Using the SPSS software, open the Afrobarometer dataset or the High School Longitudinal Study dataset (whichever you chose) from Week 2.
Choose an appropriate variable from Weeks 2 and 3 and calculate a confidence interval in SPSS.
Once you perform your confidence interval, review Chapter 5 and 11 of the Wagner text to understand how to copy and paste your output into your Word document.
For this Assignment:
Write a 2- to 3-paragraph analysis of your results and include a copy and paste of the appropriate visual display of the data into your document. If you are using the Afrobarometer Dataset, report the mean of Q1 (Age). If you are using the HS Long Survey Dataset, report the mean of X1SES.
Based on the results of your data in this confidence interval Assignment, provide a brief explanation of what the implications for social change might be.
Learning Resources
Required Readings
Frankfort-Nachmias, C., Leon-Guerrero, A., & Davis, G. (2020). Social statistics for a diverse society (9th ed.). Thousand Oaks, CA: Sage Publications.
Chapter 5, “The Normal Distribution” (pp. 151-177)
Chapter 6, “Sampling and Sampling Distributions” (pp. 179-209)
Chapter 7, “Estimation” (pp. 211-240)
Wagner, III, W. E. (2020). Using IBM® SPSS® statistics for research methods and social science statistics (7th ed.). Thousand Oaks, CA: Sage Publications.
Chapter 3, “Selecting and Sampling Cases”
Chapter 5, “Charts and Graphs”
Chapter 11, “Editing Output”
Magnusson, K. (n.d.). Welcome to Kristoffer Magnusson’s blog about R, Statistics, Psychology, Open Science, Data Visualization [blog]. Retrieved from http://rpsychologist.com/index.html
As you review this web blog, select the Interpreting Confidence Intervals – new d3.js visualization link, once you select the link, follow the instructions to view the interactive for confidence intervals. This interactive will help you to visualize and understand confidence intervals.
Note: This is Kristoffer Magnusson’s personal blog and his views may not necessarily reflect the views of Walden University faculty.
Walden University Library. (n.d.). Course Guide and Assignment Help for RSCH 8210. Retrieved from http://academicguides.waldenu.edu/rsch8210
For help with this week’s research, see this Course Guide and related weekly assignment resources.
Optional Resources
Rice University, University of Houston Clear Lake, and Tufts University. (n.d.). Online Statistics Education: An Interactive Multimedia Course of Study. Retrieved from http://onlinestatbook.com/2/estimation/ci_sim.html
Use this website for your practice as you consider confidence intervals and how the width changes. Also, consider why the width might be important.
Skill Builders:
Confidence Intervals
Sampling Distributions
To access these Skill Builders, navigate back to your Blackboard Course Home page, and locate “Skill Builders” in the left navigation pane. From there, click on the relevant Skill Builder link for this week.
ASU Capital Budgeting Practice Quantatitive Math Health Service Worksheet
ACTIVITY: CAPITAL BUDGETING PRACTICEComplete the following and submit it in a Word document. Be sure to show your process ...
ASU Capital Budgeting Practice Quantatitive Math Health Service Worksheet
ACTIVITY: CAPITAL BUDGETING PRACTICEComplete the following and submit it in a Word document. Be sure to show your process and calculations:Assume you have just retired as the CEO of a successful company. A major publisher has offered you a book deal. The publisher will pay you $1 million up front if you agree to write a book about your experiences. You estimate that it will take three years to write the book. The time you spend writing will cause you to give up speaking engagements amounting to $500,000 per year. You estimate your opportunity cost to be 10%.Should you accept this deal? Plot a diagram that measures NPV (on the y-axis) vs. discount rate (on the x-axis) to solve this problem. (Hint: Have your scale on the x-axis go to 50% (discount rate)).Determine the IRR for this deal. (Hint: IRR is the point at which NPV = 0)Suppose you inform the publisher that it needs to sweeten the deal before you will accept it. The publisher offers $550,000 advance and $1,000,000 in four years when the book is published.Should you accept or reject the new offer? Again, plot a diagram that measures NVP (on the y-axis) vs. discount rate (on the x-axis) to solve this problem. (Hint: Have your scale on the x-axis go to 50% (discount rate)).Determine the IRRs for this deal (Hint: There are two IRRs for this problem).Discuss if the IRR rule for making budgetary decisions can be used in this case.Finally, you are able to get the publisher to increase your advance to $750,000, in addition to the $1 million when the book is published in four years.Should you accept or reject this new offer? Again, plot a diagram that measures NVP (on the y-axis) vs. discount rate (on the x-axis) to solve this problem. (Hint: Have your scale on the x-axis go to 50% (discount rate)).Determine the IRR for this deal.State three conclusions regarding the use of IRR vs. NPV that you can make from questions 2–4. Which is the stronger method to use (IRR or NPV), and why?By submitting this paper, you agree: (1) that you are submitting your paper to be used and stored as part of the SafeAssign™ services in accordance with the Blackboard Privacy Policy; (2) that your institution may use your paper in accordance with your institution's policies; and (3) that your use of SafeAssign will be without recourse against Blackboard Inc. and its affiliates.
Walden University Statistics Worksheet
For this Assignment, you will examine statistical significance and meaningfulness based on sample statements.To prepare fo ...
Walden University Statistics Worksheet
For this Assignment, you will examine statistical significance and meaningfulness based on sample statements.To prepare for this Assignment:Review the Week 5 Scenarios found in this week’s Learning Resources and select two of the four scenarios for this Assignment. For additional support, review the Skill Builder: Evaluating P Values and the Skill Builder: Statistical Power, which you can find by navigating back to your Blackboard Course Home Page. From there, locate the Skill Builder link in the left navigation pane.For this Assignment:Critically evaluate the two scenarios you selected based upon the following points:Critically evaluate the sample size.Critically evaluate the statements for meaningfulness.Critically evaluate the statements for statistical significance.Based on your evaluation, provide an explanation of the implications for social change.Use proper APA format and citations, and referencing.
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Week5 Discussion
Choose one of the following two prompts to respond to. In your two follow up posts, respond at least once to each prompt o ...
Week5 Discussion
Choose one of the following two prompts to respond to. In your two follow up posts, respond at least once to each prompt option. Use the discussion topic as a place to ask questions, speculate about answers, and share insights. Be sure to embed and cite your references for any supporting images.Option 1:Think of a problem that you may be interested in that deals with a comparison of two population means. Propose either a confidence interval or a hypothesis test question that compares these two means. Gather appropriate data and post your problem (without a solution) in the discussion topic. Once your initial post is complete, respond to your own post with the solution for others to check their work.Option 2:Think of a problem that you may be interested in that deals with a comparison of two population proportions. Propose either a confidence interval or a hypothesis test question that compares these two proportions. Gather appropriate data and post your problem (without a solution) in the discussion topic. Once your initial post is complete, respond to your own post with the solution for others to check their work.For your response to a classmate (two responses required):Pick two classmates to complete both of their sample test problems using a significance level not previously used for that specific classmate’s problem. Include the null and alternative hypothesis, alpha value, and write a conclusion. Make sure that you use appropriate terminology and specify whether you are using the classical method or the p-value method.For additional details, please refer to the Discussion Rubric document.
Phase 3 Hypothesis testing
This week you will begin working on Phase 3 of your course project.
Using the same data set and variables for your sele ...
Phase 3 Hypothesis testing
This week you will begin working on Phase 3 of your course project.
Using the same data set and variables for your selected topic that you
used for phases 1 and 2, add the following information to your
analysis:Discuss the process for hypothesis testing.
Explain the 8 steps of hypothesis testingWhen performing the 8 steps for hypothesis testing, which method do you prefer; P-Value method or Critical Value method? Why?Perform the hypothesis test. (Salaries):
Claim: The average salary for all
jobs in Minnesota is less than $65,000. Test the claim using α = 0.05
and assume your data is normally distributed and σ is unknown.
Based on your selected topic, perform and document the following steps:
Write the null and alternative hypothesis symbolically and identify which hypothesis is the claim.Is the test two-tailed, left-tailed, or right-tailed? Explain.Which test statistic will you use for your hypothesis test; z-test or t-test? Explain.What is the value of the test-statistic? Show your calculationWhat is the P-value? Explain how you determined it What is the critical value? Explain how you calculated itWhat is your decision? Reject the null or do not
reject the null? Explain why you made your decision including the
results for your p-value and the critical value.State the final conclusion in non-technical terms.
Please show your work for the construction of the test-statistic and explain your process for finding the p-value and critical value. You may use the Equation Editor to format your calculation steps on the Word document/ Attached is the word documents that will help with this assignment
Walden University Confidence Intervals and Afrobarometer Dataset Discussion Paper
In your Week 2 Assignment, you displayed data based on a categorical variable and continuous variable from a specific data ...
Walden University Confidence Intervals and Afrobarometer Dataset Discussion Paper
In your Week 2 Assignment, you displayed data based on a categorical variable and continuous variable from a specific dataset. In Week 3, you used the same variables as in Week 2 to perform a descriptive analysis of the data. For this Assignment, you will calculate a confidence interval in SPSS for one of the variables from your Week 2 and Week 3 Assignments.
To prepare for this Assignment:
Review the Learning Resources related to probability, sampling distributions, and confidence intervals.
For additional support, review the Skill Builder: Confidence Intervals and the Skill Builder: Sampling Distributions, which you can find by navigating back to your Blackboard Course Home Page. From there, locate the Skill Builder link in the left navigation pane.
Using the SPSS software, open the Afrobarometer dataset or the High School Longitudinal Study dataset (whichever you chose) from Week 2.
Choose an appropriate variable from Weeks 2 and 3 and calculate a confidence interval in SPSS.
Once you perform your confidence interval, review Chapter 5 and 11 of the Wagner text to understand how to copy and paste your output into your Word document.
For this Assignment:
Write a 2- to 3-paragraph analysis of your results and include a copy and paste of the appropriate visual display of the data into your document. If you are using the Afrobarometer Dataset, report the mean of Q1 (Age). If you are using the HS Long Survey Dataset, report the mean of X1SES.
Based on the results of your data in this confidence interval Assignment, provide a brief explanation of what the implications for social change might be.
Learning Resources
Required Readings
Frankfort-Nachmias, C., Leon-Guerrero, A., & Davis, G. (2020). Social statistics for a diverse society (9th ed.). Thousand Oaks, CA: Sage Publications.
Chapter 5, “The Normal Distribution” (pp. 151-177)
Chapter 6, “Sampling and Sampling Distributions” (pp. 179-209)
Chapter 7, “Estimation” (pp. 211-240)
Wagner, III, W. E. (2020). Using IBM® SPSS® statistics for research methods and social science statistics (7th ed.). Thousand Oaks, CA: Sage Publications.
Chapter 3, “Selecting and Sampling Cases”
Chapter 5, “Charts and Graphs”
Chapter 11, “Editing Output”
Magnusson, K. (n.d.). Welcome to Kristoffer Magnusson’s blog about R, Statistics, Psychology, Open Science, Data Visualization [blog]. Retrieved from http://rpsychologist.com/index.html
As you review this web blog, select the Interpreting Confidence Intervals – new d3.js visualization link, once you select the link, follow the instructions to view the interactive for confidence intervals. This interactive will help you to visualize and understand confidence intervals.
Note: This is Kristoffer Magnusson’s personal blog and his views may not necessarily reflect the views of Walden University faculty.
Walden University Library. (n.d.). Course Guide and Assignment Help for RSCH 8210. Retrieved from http://academicguides.waldenu.edu/rsch8210
For help with this week’s research, see this Course Guide and related weekly assignment resources.
Optional Resources
Rice University, University of Houston Clear Lake, and Tufts University. (n.d.). Online Statistics Education: An Interactive Multimedia Course of Study. Retrieved from http://onlinestatbook.com/2/estimation/ci_sim.html
Use this website for your practice as you consider confidence intervals and how the width changes. Also, consider why the width might be important.
Skill Builders:
Confidence Intervals
Sampling Distributions
To access these Skill Builders, navigate back to your Blackboard Course Home page, and locate “Skill Builders” in the left navigation pane. From there, click on the relevant Skill Builder link for this week.
ASU Capital Budgeting Practice Quantatitive Math Health Service Worksheet
ACTIVITY: CAPITAL BUDGETING PRACTICEComplete the following and submit it in a Word document. Be sure to show your process ...
ASU Capital Budgeting Practice Quantatitive Math Health Service Worksheet
ACTIVITY: CAPITAL BUDGETING PRACTICEComplete the following and submit it in a Word document. Be sure to show your process and calculations:Assume you have just retired as the CEO of a successful company. A major publisher has offered you a book deal. The publisher will pay you $1 million up front if you agree to write a book about your experiences. You estimate that it will take three years to write the book. The time you spend writing will cause you to give up speaking engagements amounting to $500,000 per year. You estimate your opportunity cost to be 10%.Should you accept this deal? Plot a diagram that measures NPV (on the y-axis) vs. discount rate (on the x-axis) to solve this problem. (Hint: Have your scale on the x-axis go to 50% (discount rate)).Determine the IRR for this deal. (Hint: IRR is the point at which NPV = 0)Suppose you inform the publisher that it needs to sweeten the deal before you will accept it. The publisher offers $550,000 advance and $1,000,000 in four years when the book is published.Should you accept or reject the new offer? Again, plot a diagram that measures NVP (on the y-axis) vs. discount rate (on the x-axis) to solve this problem. (Hint: Have your scale on the x-axis go to 50% (discount rate)).Determine the IRRs for this deal (Hint: There are two IRRs for this problem).Discuss if the IRR rule for making budgetary decisions can be used in this case.Finally, you are able to get the publisher to increase your advance to $750,000, in addition to the $1 million when the book is published in four years.Should you accept or reject this new offer? Again, plot a diagram that measures NVP (on the y-axis) vs. discount rate (on the x-axis) to solve this problem. (Hint: Have your scale on the x-axis go to 50% (discount rate)).Determine the IRR for this deal.State three conclusions regarding the use of IRR vs. NPV that you can make from questions 2–4. Which is the stronger method to use (IRR or NPV), and why?By submitting this paper, you agree: (1) that you are submitting your paper to be used and stored as part of the SafeAssign™ services in accordance with the Blackboard Privacy Policy; (2) that your institution may use your paper in accordance with your institution's policies; and (3) that your use of SafeAssign will be without recourse against Blackboard Inc. and its affiliates.
Walden University Statistics Worksheet
For this Assignment, you will examine statistical significance and meaningfulness based on sample statements.To prepare fo ...
Walden University Statistics Worksheet
For this Assignment, you will examine statistical significance and meaningfulness based on sample statements.To prepare for this Assignment:Review the Week 5 Scenarios found in this week’s Learning Resources and select two of the four scenarios for this Assignment. For additional support, review the Skill Builder: Evaluating P Values and the Skill Builder: Statistical Power, which you can find by navigating back to your Blackboard Course Home Page. From there, locate the Skill Builder link in the left navigation pane.For this Assignment:Critically evaluate the two scenarios you selected based upon the following points:Critically evaluate the sample size.Critically evaluate the statements for meaningfulness.Critically evaluate the statements for statistical significance.Based on your evaluation, provide an explanation of the implications for social change.Use proper APA format and citations, and referencing.
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