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H0: mu1 = mu2
Ha: mu1 ≠ mu2
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Statistics Discussions Questions
Need 350 words reponse for each discussion with references .Provide each in seprate doc - DQ 1 What is the primary ...
Statistics Discussions Questions
Need 350 words reponse for each discussion with references .Provide each in seprate doc - DQ 1 What is the primary purpose of inferential statistics? How might inferential statistics be applied to your intended research study? Explain. - DQ 2 Researchers often assume a normal distribution of data. Why is this significant in quantitative research? Explain.
statistics homework
please follow the requirement and read carefully the problem 7 set file and do all partsi have uploaded 2 pictures of data ...
statistics homework
please follow the requirement and read carefully the problem 7 set file and do all partsi have uploaded 2 pictures of data for the JMP section
University of Phoenix Data & Business Analytics Project
Hypothesis testing is used in business to test assumptions and theories. These assumptions are tested against evidence pro ...
University of Phoenix Data & Business Analytics Project
Hypothesis testing is used in business to test assumptions and theories. These assumptions are tested against evidence provided by actual, observed data. A statistical hypothesis is a statement about the value of a population parameter that we are interested in. Hypothesis testing is a process followed to arrive at a decision between 2 competing, mutually exclusive, collective exhaustive statements about the parameter’s value.Consider the following scenario: An industrial seller of grass seeds packages its product in 50-pound bags. A customer has recently filed a complained alleging that the bags are underfilled. A production manager randomly samples a batch and measures the following weights:Weight, (lbs)45.6 49.547.7 46.747.6 48.850.5 48.650.2 51.546.9 50.247.8 49.949.3 49.853.1 49.349.5 50.1To determine whether the bags are indeed being underfilled by the machinery, the manager must conduct a test of mean with a significance level α = 0.05.In a minimum of 175 words, respond to the following:State appropriate null (Ho) and alternative (H1) hypotheses.What is the critical value if we work with a significant level α = 0.05?What is the decision rule?Calculate the test statistic.Are the bags indeed being underfilled?Should machinery be recalibrated?
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Quantitative Analysis Report
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Statistics and Null Hypothesis Questions
) Identify Whether to Use a One-tailed or Two-tailed Test Given H0: p ≥ 80% and Ha: p < 80%,
determine whether the h ...
Statistics and Null Hypothesis Questions
) Identify Whether to Use a One-tailed or Two-tailed Test Given H0: p ≥ 80% and Ha: p < 80%,
determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. 2) A car maker claims that its new sub-compact car gets better than 47 miles per gallon on the highway.
Determine whether the hypothesis test for this is left-tailed, right-tailed, or two-tailed.
3) The owner of a professional basketball team claims that the mean attendance at games is over 30,000
and therefore the team needs a new arena. Determine whether the hypothesis test for this claim is lefttailed, right-tailed, or two-tailed. 4) Interpret a Decision Based on the Results of a Statistical Test The mean age of bus drivers in Chicago is
50.2 years. If a hypothesis test is performed, how should you interpret a decision that rejects the null
hypothesis? 5) The mean age of bus drivers in Chicago is greater than 57.8 years. If a hypothesis test is performed,
how should you interpret a decision that rejects the null hypothesis?
6) The mean IQ of statistics teachers is greater than 160. If a hypothesis test is performed, how should
you interpret a decision that rejects the null hypothesis? 7) Find the critical value for a right-tailed test with α = 0.01 and n = 75.
8) You wish to test the claim that μ ≠ 22 at a level of significance of α = 0.05 and are given sample
statistics n = 35, x = 21.1, and s = 2.7. Compute the value of the standardized test statistic. Round your
answer to two decimal places.
9) Find the standardized test statistic t for a sample with n = 15, x = 7.4, s = 0.8, and α = 0.05 if H0: μ ≤
7.1. Round your answer to three decimal places. 10) Determine the critical value, z0, to test the claim about the population proportion p = 0.250 given n
= 48 and p ^ = 0.231. Use α = 0.01.
11) Find the critical X2 -values to test the claim σ2 = 4.3 if n = 12 and α = 0.05.
THE IBM SPSS Software IS NEEDED
THE IBM SPSS Software IS NEEDED FOR THIS!!! For this Assignment, you will examine statistical significance and meaningf ...
THE IBM SPSS Software IS NEEDED
THE IBM SPSS Software IS NEEDED FOR THIS!!! 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. References Frankfort-Nachmias, C., & Leon-Guerrero, A. (2018). Social statistics for a diverse society (8th ed.). Thousand Oaks, CA: Sage Publications. Chapter 8, “Testing Hypothesis” (pp. 203-204) Wagner, W. E. (2016). Using IBM® SPSS® statistics for research methods and social science statistics (6th ed.). Thousand Oaks, CA: Sage Publications. Chapter 6, “Testing Hypotheses Using Means and Cross-Tabulation” Warner, R. M. (2012). Applied statistics from bivariate through multivariate techniques (2nd ed.). Thousand Oaks, CA: Sage Publications. Applied Statistics From Bivariate Through Multivariate Techniques, 2nd Edition by Warner, R.M. Copyright 2012 by Sage College. Reprinted by permission of Sage College via the Copyright Clearance Center. 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 [Updated] Statistical Power and Significance Testing Visualization link, once you select the link, follow the instructions to view the interactive for statistical power. This interactive website will help you to visualize and understand statistical power and significance testing. Note: This is Kristoffer Magnusson’s personal blog and his views may not necessarily reflect the views of Walden University faculty. American Statistical Association (2016). American Statistical Association Releases Statement on Statistical Significance and P-Values. Retrieved from http://www.amstat.org/newsroom/pressreleases/P-ValueStatement.pdf As you review this press release, consider the misconceptions and the misuse of p-values in quantitative research. Document: Data Set 2014 General Social Survey (dataset file) Document: Data Set Afrobarometer (dataset file) Use this dataset to complete this week’s Assignment. Note: You will need the SPSS software to open this dataset. Document: High School Longitudinal Study 2009 Dataset (dataset file) Use this dataset to complete this week’s Assignment. Note: You will need the SPSS software to open this dataset. Use this dataset to complete this week’s Discussion. Note: You will need the SPSS software to open this dataset.
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Statistics Discussions Questions
Need 350 words reponse for each discussion with references .Provide each in seprate doc - DQ 1 What is the primary ...
Statistics Discussions Questions
Need 350 words reponse for each discussion with references .Provide each in seprate doc - DQ 1 What is the primary purpose of inferential statistics? How might inferential statistics be applied to your intended research study? Explain. - DQ 2 Researchers often assume a normal distribution of data. Why is this significant in quantitative research? Explain.
statistics homework
please follow the requirement and read carefully the problem 7 set file and do all partsi have uploaded 2 pictures of data ...
statistics homework
please follow the requirement and read carefully the problem 7 set file and do all partsi have uploaded 2 pictures of data for the JMP section
University of Phoenix Data & Business Analytics Project
Hypothesis testing is used in business to test assumptions and theories. These assumptions are tested against evidence pro ...
University of Phoenix Data & Business Analytics Project
Hypothesis testing is used in business to test assumptions and theories. These assumptions are tested against evidence provided by actual, observed data. A statistical hypothesis is a statement about the value of a population parameter that we are interested in. Hypothesis testing is a process followed to arrive at a decision between 2 competing, mutually exclusive, collective exhaustive statements about the parameter’s value.Consider the following scenario: An industrial seller of grass seeds packages its product in 50-pound bags. A customer has recently filed a complained alleging that the bags are underfilled. A production manager randomly samples a batch and measures the following weights:Weight, (lbs)45.6 49.547.7 46.747.6 48.850.5 48.650.2 51.546.9 50.247.8 49.949.3 49.853.1 49.349.5 50.1To determine whether the bags are indeed being underfilled by the machinery, the manager must conduct a test of mean with a significance level α = 0.05.In a minimum of 175 words, respond to the following:State appropriate null (Ho) and alternative (H1) hypotheses.What is the critical value if we work with a significant level α = 0.05?What is the decision rule?Calculate the test statistic.Are the bags indeed being underfilled?Should machinery be recalibrated?
9 pages
Quantitative Analysis Report
1.Is there a significant difference in the percent of total spending that is environmental spending There is more variabil ...
Quantitative Analysis Report
1.Is there a significant difference in the percent of total spending that is environmental spending There is more variability on spending in coastal ...
Statistics and Null Hypothesis Questions
) Identify Whether to Use a One-tailed or Two-tailed Test Given H0: p ≥ 80% and Ha: p < 80%,
determine whether the h ...
Statistics and Null Hypothesis Questions
) Identify Whether to Use a One-tailed or Two-tailed Test Given H0: p ≥ 80% and Ha: p < 80%,
determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. 2) A car maker claims that its new sub-compact car gets better than 47 miles per gallon on the highway.
Determine whether the hypothesis test for this is left-tailed, right-tailed, or two-tailed.
3) The owner of a professional basketball team claims that the mean attendance at games is over 30,000
and therefore the team needs a new arena. Determine whether the hypothesis test for this claim is lefttailed, right-tailed, or two-tailed. 4) Interpret a Decision Based on the Results of a Statistical Test The mean age of bus drivers in Chicago is
50.2 years. If a hypothesis test is performed, how should you interpret a decision that rejects the null
hypothesis? 5) The mean age of bus drivers in Chicago is greater than 57.8 years. If a hypothesis test is performed,
how should you interpret a decision that rejects the null hypothesis?
6) The mean IQ of statistics teachers is greater than 160. If a hypothesis test is performed, how should
you interpret a decision that rejects the null hypothesis? 7) Find the critical value for a right-tailed test with α = 0.01 and n = 75.
8) You wish to test the claim that μ ≠ 22 at a level of significance of α = 0.05 and are given sample
statistics n = 35, x = 21.1, and s = 2.7. Compute the value of the standardized test statistic. Round your
answer to two decimal places.
9) Find the standardized test statistic t for a sample with n = 15, x = 7.4, s = 0.8, and α = 0.05 if H0: μ ≤
7.1. Round your answer to three decimal places. 10) Determine the critical value, z0, to test the claim about the population proportion p = 0.250 given n
= 48 and p ^ = 0.231. Use α = 0.01.
11) Find the critical X2 -values to test the claim σ2 = 4.3 if n = 12 and α = 0.05.
THE IBM SPSS Software IS NEEDED
THE IBM SPSS Software IS NEEDED FOR THIS!!! For this Assignment, you will examine statistical significance and meaningf ...
THE IBM SPSS Software IS NEEDED
THE IBM SPSS Software IS NEEDED FOR THIS!!! 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. References Frankfort-Nachmias, C., & Leon-Guerrero, A. (2018). Social statistics for a diverse society (8th ed.). Thousand Oaks, CA: Sage Publications. Chapter 8, “Testing Hypothesis” (pp. 203-204) Wagner, W. E. (2016). Using IBM® SPSS® statistics for research methods and social science statistics (6th ed.). Thousand Oaks, CA: Sage Publications. Chapter 6, “Testing Hypotheses Using Means and Cross-Tabulation” Warner, R. M. (2012). Applied statistics from bivariate through multivariate techniques (2nd ed.). Thousand Oaks, CA: Sage Publications. Applied Statistics From Bivariate Through Multivariate Techniques, 2nd Edition by Warner, R.M. Copyright 2012 by Sage College. Reprinted by permission of Sage College via the Copyright Clearance Center. 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 [Updated] Statistical Power and Significance Testing Visualization link, once you select the link, follow the instructions to view the interactive for statistical power. This interactive website will help you to visualize and understand statistical power and significance testing. Note: This is Kristoffer Magnusson’s personal blog and his views may not necessarily reflect the views of Walden University faculty. American Statistical Association (2016). American Statistical Association Releases Statement on Statistical Significance and P-Values. Retrieved from http://www.amstat.org/newsroom/pressreleases/P-ValueStatement.pdf As you review this press release, consider the misconceptions and the misuse of p-values in quantitative research. Document: Data Set 2014 General Social Survey (dataset file) Document: Data Set Afrobarometer (dataset file) Use this dataset to complete this week’s Assignment. Note: You will need the SPSS software to open this dataset. Document: High School Longitudinal Study 2009 Dataset (dataset file) Use this dataset to complete this week’s Assignment. Note: You will need the SPSS software to open this dataset. Use this dataset to complete this week’s Discussion. Note: You will need the SPSS software to open this dataset.
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