Which of the following is the maximum value of the equation
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y=-x^2-x+6
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Stat 200 Week 2 Homework Problems 1
The median incomes of females in each state of the United States, including the District of Columbia and Puerto Rico, are ...
Stat 200 Week 2 Homework Problems 1
The median incomes of females in each state of the United States, including the District of Columbia and Puerto Rico, are given in table #2.2.10 ...
Assignment: Evaluating Significance of Findings
For this Assignment, you will examine statistical significance and meaningfulness based on sample statements.To prepare fo ...
Assignment: Evaluating Significance of Findings
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.
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Poverty In The United States
Poverty in America can be described as the actual living conditions of individuals that the government identifies as poor. ...
Poverty In The United States
Poverty in America can be described as the actual living conditions of individuals that the government identifies as poor. However, the meaning of ...
Georgia Military College The Empirical Rule Exam Practice
For the past ten years, grades on the final exam in Mr. Statman’s statistic course have been normally distributed with a ...
Georgia Military College The Empirical Rule Exam Practice
For the past ten years, grades on the final exam in Mr. Statman’s statistic course have been normally distributed with a mean of µ = 75 and a standard deviation of σ = 15. Mr. Statman has a current class with 50 students. Let us predict some outcomes on the final exam for that class.a) Draw a normal distribution. Include the mean and two standard deviations. Complete this sentence using the Empirical Rule: Approximately, 95% of students will score between _____ and ______ on the final exam.b) Shade in the A range (90 and above) on your distribution in part a. Find the probability that a randomly selected student makes an A on Mr. Statman’s final exam. How many of the 50 students do we expect to make an A?c) Suppose that we randomly select 5 students from the class and AVERAGE their final exam scores. The Central Limit Theorem indicate that the average of the 5 students will fall somewhere in a Normal Distribution with = _______ and = _______. Complete this sentence using the Empirical Rule: Approximately, 95% of the time the average of 5 random students will fall between _____ and ______ on the final exam. d) Find the probability that the average of the 5 students is an A average (90 and above).e) Let’s do the same thing that we did in parts c and d, except for the entire class of 50. The Central Limit Theorem indicate that the average of the 50 students will fall somewhere in a Normal Distribution with = _______ and = _______. Complete this sentence using the Empirical Rule: Approximately, 95% of the time the average of 50 random students will fall between _____ and ______ on the final exam.f) Find the probability that the average of the 50 students is an A average (90 and above).g) Find the following probabilities (you redoing parts b, d, and f, but with a C instead of an A) : A) P(a randomly selected student makes a C on the final exam) = ______ B) P(a sample of 5 randomly selected students make a C average of the final exam) = _____ C) P(the class average of all 50 students will be a C average)h) Discuss what you have learned from this exercise.Respond too two peer
Walden University Importance of Relationships in GSS Dataset Discussion
For this Discussion, you will explore the relationship between these components and understand the trade-off between reduc ...
Walden University Importance of Relationships in GSS Dataset Discussion
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 7, p. 188, consider Hispanic migration and earnings 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.
Using 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, the mean of Age to verify the dataset you used, 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.
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.
Datasets
Your instructor will post the datasets for the course in the Doc Sharing section and in an Announcement. Your instructor may also recommend using a different dataset from the ones provided here.
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
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9 pages
Stat 200 Week 2 Homework Problems 1
The median incomes of females in each state of the United States, including the District of Columbia and Puerto Rico, are ...
Stat 200 Week 2 Homework Problems 1
The median incomes of females in each state of the United States, including the District of Columbia and Puerto Rico, are given in table #2.2.10 ...
Assignment: Evaluating Significance of Findings
For this Assignment, you will examine statistical significance and meaningfulness based on sample statements.To prepare fo ...
Assignment: Evaluating Significance of Findings
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.
4 pages
Poverty In The United States
Poverty in America can be described as the actual living conditions of individuals that the government identifies as poor. ...
Poverty In The United States
Poverty in America can be described as the actual living conditions of individuals that the government identifies as poor. However, the meaning of ...
Georgia Military College The Empirical Rule Exam Practice
For the past ten years, grades on the final exam in Mr. Statman’s statistic course have been normally distributed with a ...
Georgia Military College The Empirical Rule Exam Practice
For the past ten years, grades on the final exam in Mr. Statman’s statistic course have been normally distributed with a mean of µ = 75 and a standard deviation of σ = 15. Mr. Statman has a current class with 50 students. Let us predict some outcomes on the final exam for that class.a) Draw a normal distribution. Include the mean and two standard deviations. Complete this sentence using the Empirical Rule: Approximately, 95% of students will score between _____ and ______ on the final exam.b) Shade in the A range (90 and above) on your distribution in part a. Find the probability that a randomly selected student makes an A on Mr. Statman’s final exam. How many of the 50 students do we expect to make an A?c) Suppose that we randomly select 5 students from the class and AVERAGE their final exam scores. The Central Limit Theorem indicate that the average of the 5 students will fall somewhere in a Normal Distribution with = _______ and = _______. Complete this sentence using the Empirical Rule: Approximately, 95% of the time the average of 5 random students will fall between _____ and ______ on the final exam. d) Find the probability that the average of the 5 students is an A average (90 and above).e) Let’s do the same thing that we did in parts c and d, except for the entire class of 50. The Central Limit Theorem indicate that the average of the 50 students will fall somewhere in a Normal Distribution with = _______ and = _______. Complete this sentence using the Empirical Rule: Approximately, 95% of the time the average of 50 random students will fall between _____ and ______ on the final exam.f) Find the probability that the average of the 50 students is an A average (90 and above).g) Find the following probabilities (you redoing parts b, d, and f, but with a C instead of an A) : A) P(a randomly selected student makes a C on the final exam) = ______ B) P(a sample of 5 randomly selected students make a C average of the final exam) = _____ C) P(the class average of all 50 students will be a C average)h) Discuss what you have learned from this exercise.Respond too two peer
Walden University Importance of Relationships in GSS Dataset Discussion
For this Discussion, you will explore the relationship between these components and understand the trade-off between reduc ...
Walden University Importance of Relationships in GSS Dataset Discussion
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 7, p. 188, consider Hispanic migration and earnings 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.
Using 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, the mean of Age to verify the dataset you used, 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.
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.
Datasets
Your instructor will post the datasets for the course in the Doc Sharing section and in an Announcement. Your instructor may also recommend using a different dataset from the ones provided here.
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
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