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PSY7864 Capella University Data Analysis and Application T Test Paper
Hi i have an assignment to submit and I am uploading the template needed to complete the assignment. The template informat ...
PSY7864 Capella University Data Analysis and Application T Test Paper
Hi i have an assignment to submit and I am uploading the template needed to complete the assignment. The template information will be replaced with the answers you supply. The document is called DAA Template. I am pasting the information for Assignment 8 in the requirements area. SPSS is needed to open the grades file and to complete this assignment. I have attached the attachment that includes all resources needed. Thank you so muchAssignment 8[u08a1] Unit 8 Assignment 1t TestsSee the Resources area for links to resources that you will use for this assignment:You will complete this assignment using the DAA Template.Read the SPSS Data Analysis Report Guidelines for a more complete understanding of the DAA Template and how to format and organize your assignment.Refer to the IBM SPSS Step-By-Step Guide: t Tests for additional information on using SPSS for this assignment.If necessary, review the Copy/Export Output Instructions to refresh your memory on how to perform these tasks. As with your previous assignments, your submission should be in narrative format with supporting statistical output (table and graphs) integrated into the narrative in the appropriate places (not all at the end of the document).You will analyze the following variables in the grades.sav data set:gendergpaStep 1: Write Section 1 of the DAA.Provide the context of the grades.sav data set.Include a definition of the specified variables (predictor, outcome) and corresponding scales of measurement.Specify the sample size of the data set.Step 2: Write Section 2 of the DAA.Analyze the assumptions of the t test.Paste the SPSS histogram output for gpa and discuss your visual interpretations.Paste SPSS descriptives output showing skewness and kurtosis values for gpa and interpret them.Paste SPSS output for the Shapiro-Wilk test of gpa and interpret it.Report the results of the Levene test and interpret it.Summarize whether or not the assumptions of the t test are met.Step 3: Write Section 3 of the DAA.Specify a research question related to gender and gpa.Articulate the null hypothesis and alternative hypothesis.Specify the alpha level.Step 4: Write Section 4 of the DAA.Paste the SPSS output of the t test.Report the results of the SPSS output using proper APA guidelines (refer to the Unit 8 Introduction and the "Results" example from the Warner text in Chapter 5). Include the following:t.Degrees of freedom.p value.Effect size.Interpretation of effect size.Means and standard deviations for each group.Mean difference.95% confidence interval of the difference of sample means.Interpret the results against the null hypothesis.Step 5: Write Section 5 of the DAA.Discuss the implications of this t test as it relates to the research question.Conclude with an analysis of the strengths and limitations of the t test.Submit your DAA Template as an attached Word document in the assignment area.Resourcest Tests Scoring Guide.IBM SPSS Step-by-Step Guide: t Tests [DOC].DAA Template [DOCX].APA Style and Format.SPSS Data Analysis Report Guidelines.Copy/Export Output Instructions.
Answer question regarding the binomial case study and grading rubric?
I attached two files one is the question and the other one is example maybe it helps you " It is so similar to the questio ...
Answer question regarding the binomial case study and grading rubric?
I attached two files one is the question and the other one is example maybe it helps you " It is so similar to the question that I want to answer it"
PSYC 4700 Capella University Week 6 T Tests and Confidence Intervals Worksheet
A t test involves comparing the average between two different groups. For example, a new curriculum was implemented at a m ...
PSYC 4700 Capella University Week 6 T Tests and Confidence Intervals Worksheet
A t test involves comparing the average between two different groups. For example, a new curriculum was implemented at a middle school in the 2018–2019 school year in hopes of improving standardized test scores. To determine whether there was a difference in scores, leaders will conduct a t test using the data from the 2018–2019 school year and the previous school year, 2017–2018, as the two different groups. If scores improved, leaders are likely to implement it for the upcoming 2019–2020 school year to continue upward trends in student performance. Please complete the attached worksheet
The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste, statistics homework help
2a. The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste. A random sampl ...
The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste, statistics homework help
2a. The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste. A random sample of 60 people used the new toothpaste for 6-months. The mean number of cavities at their next checkup is 1.5. In the general population, the mean number of cavities at a 6-month check-up is 1.73 (0=1.12)Is this a one or two-tailed test?What are the H0 and Ha for this study?Compute Zobt-What is Zev?4a. Henry preformed a two-tailed test for an experiment in which N-24. He could not find his table of t critical values, but he remembered the tcv at df=13. He decided to compare his tobtwith this tcv. Is he more likely to make a Type I or a Type II error in this situation?6a. A researcher hypothesis that individuals who listen to classical music will score differently from the general population on a test of spatial ability. On a standardized test of spatial ability, u=58. A random sample of 14 individuals who listen to classical music is given the same test. Their scores on the test are 52,59,63,65,58,55,62,63,53,59,57,61,60,59.Is this a one or two-tailed test?What are the Ho and Ha for this study?Compute t-obt-What is tcv?Should Ho be rejected? What should the researcher conclude?Determine the 95% confidence interval for the population mean, based on the sample mean.8a. A researcher believes that the percentage of people who exercise in California is greater than the national exercise rate. The national rate is 20%. The researcher gathers random sample of the 20 individuals who live in California and finds that the number who exercise regularly is 31 out of 120.What is the obt?What is the df for this test?What is the cv?What conclusion should be drawn from these results?The researcher in exercise 2 decides to conduct the same study using a within-participants design to control for differences in cognitive ability. He selects a random sample of subjects and has them study different material of equal difficulty in both the music and no music conditions. The study is completely counterbalanced to control for order effects. The data appear next. As before, they are measured on an interval-ratio scale and are normally distributed; he believes that studying under quiet conditions will lead to better performance.MUSIC NO MUSIC7 76 85 76 78 98 8What statistical test should be used to analyze these data?Identify Ho and Ha for this study.Conduct the appropriate analysis.Should Ho be rejected? What should the researcher conclude?If significant, compute and interpret the effect size.If significant, draw a graph representing the data.Determine 95% confidence interval.Researchers at a food company are interested in how a new spaghetti sauce made from green tomatoes (and green in color) will compare to their traditional red spaghetti sauce. They are worried that the green color will adversely affect the tastiness scores. They randomly assign subjects to either the green or the red sauce condition. Participants indicate the tastiness of the sauce on a 10-point scale. Tastiness scores tend to be skewed. The scores are as follows.Red Sauce Green Sauce7 46 59 610 86 77 68 9What statistical test should be used to analyze these data?Identify Ho and Ha for this study.Conduct the appropriate analysis.Should Ho be rejected? What should the researcher conclude?You notice in your introductory psychology class that women tend to sit up front, and more men sit in the back. To determine whether this difference is significant, you collect data on the seating preferences for the students in your class. The data follow. Men WomenFront of the Room 15 27Back of the Room 32 19What is the obt?What is the dffor this test?What is the cv?What conclusion should be drawn from these results?What are degrees of freedom? How are the calculated?What do inferential statistics allow you to infer?What is the General Linear Model (GLM)? Why does it matter?Compare and contrast parametric and nonparametric statistics. Why and in what types of cases would you use one over the other?Why is it important to pay attention to the assumptions of the statistical test? What are your options if your dependent variable scores are not normally distributed?
Normal Distribution
Normal DistributionOne theory about the daily changes in the closing price of a stock is that these changes follow arandom ...
Normal Distribution
Normal DistributionOne theory about the daily changes in the closing price of a stock is that these changes follow arandom walk – that is, these daily events are independent of each other and move upward or downward in a random manner – and can be approximated by a normal distribution. To test this theory, collect the opening and closing prices of stocks from for your favorite company or brand.Initial Post:Choose your favorite company or brand and search finance.yahoo.com with that company name and “historical stock prices.” Download the stock history for this company for the past 6 weeks by selecting the appropriate dates and clicking on “Download to Spreadsheet” at the bottom of page.Calculate the daily change in the closing stock prices by taking the difference between the closing and opening price for the day. This is the daily stock change.Calculate the mean and standard deviation of the daily stock changes by running the Descriptive Statistics in Excel Data Analysis. Share the summary table.Consider the mean, median and mode (if it exists). Is your daily stock change distribution right skewed (median < mean), left skewed (mean < median), or symmetric (mean ≈ median)? What other considerations would you look at to determine whether or not this distribution is approximately normally distributed?See Example post.First response: Read a classmate’s response. Consider investing in your classmate’s stock and assume that the daily change is normally distributed. Using Normal.xlsx, your classmate’s mean and standard deviation, determine the probability for the daily change of this stock to have:A decrease of 0.5 point or more (X ≤ -0.5)?An increase of more than 0.5 point (X > 0.5)?A decrease of more 1 point or more (X ≤ -1)?An increase of more than 1 point (X > 1)?See Example post.Second Response: Read a different classmate’s response. Consider investing in your classmate’s stock and assume that it is normally distributed. If you wanted to be 95% sure of what the daily change would be, what range for a daily change would you expect? Use Normal.xlsx.See Example post.
3 pages
Network Diagram Pman635 Session 9 Ia 9
Problem: Given the information provided below (predecessors, normal time, normal cost, crash time (the minimum duration) a ...
Network Diagram Pman635 Session 9 Ia 9
Problem: Given the information provided below (predecessors, normal time, normal cost, crash time (the minimum duration) and crash cost (the cost if ...
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PSY7864 Capella University Data Analysis and Application T Test Paper
Hi i have an assignment to submit and I am uploading the template needed to complete the assignment. The template informat ...
PSY7864 Capella University Data Analysis and Application T Test Paper
Hi i have an assignment to submit and I am uploading the template needed to complete the assignment. The template information will be replaced with the answers you supply. The document is called DAA Template. I am pasting the information for Assignment 8 in the requirements area. SPSS is needed to open the grades file and to complete this assignment. I have attached the attachment that includes all resources needed. Thank you so muchAssignment 8[u08a1] Unit 8 Assignment 1t TestsSee the Resources area for links to resources that you will use for this assignment:You will complete this assignment using the DAA Template.Read the SPSS Data Analysis Report Guidelines for a more complete understanding of the DAA Template and how to format and organize your assignment.Refer to the IBM SPSS Step-By-Step Guide: t Tests for additional information on using SPSS for this assignment.If necessary, review the Copy/Export Output Instructions to refresh your memory on how to perform these tasks. As with your previous assignments, your submission should be in narrative format with supporting statistical output (table and graphs) integrated into the narrative in the appropriate places (not all at the end of the document).You will analyze the following variables in the grades.sav data set:gendergpaStep 1: Write Section 1 of the DAA.Provide the context of the grades.sav data set.Include a definition of the specified variables (predictor, outcome) and corresponding scales of measurement.Specify the sample size of the data set.Step 2: Write Section 2 of the DAA.Analyze the assumptions of the t test.Paste the SPSS histogram output for gpa and discuss your visual interpretations.Paste SPSS descriptives output showing skewness and kurtosis values for gpa and interpret them.Paste SPSS output for the Shapiro-Wilk test of gpa and interpret it.Report the results of the Levene test and interpret it.Summarize whether or not the assumptions of the t test are met.Step 3: Write Section 3 of the DAA.Specify a research question related to gender and gpa.Articulate the null hypothesis and alternative hypothesis.Specify the alpha level.Step 4: Write Section 4 of the DAA.Paste the SPSS output of the t test.Report the results of the SPSS output using proper APA guidelines (refer to the Unit 8 Introduction and the "Results" example from the Warner text in Chapter 5). Include the following:t.Degrees of freedom.p value.Effect size.Interpretation of effect size.Means and standard deviations for each group.Mean difference.95% confidence interval of the difference of sample means.Interpret the results against the null hypothesis.Step 5: Write Section 5 of the DAA.Discuss the implications of this t test as it relates to the research question.Conclude with an analysis of the strengths and limitations of the t test.Submit your DAA Template as an attached Word document in the assignment area.Resourcest Tests Scoring Guide.IBM SPSS Step-by-Step Guide: t Tests [DOC].DAA Template [DOCX].APA Style and Format.SPSS Data Analysis Report Guidelines.Copy/Export Output Instructions.
Answer question regarding the binomial case study and grading rubric?
I attached two files one is the question and the other one is example maybe it helps you " It is so similar to the questio ...
Answer question regarding the binomial case study and grading rubric?
I attached two files one is the question and the other one is example maybe it helps you " It is so similar to the question that I want to answer it"
PSYC 4700 Capella University Week 6 T Tests and Confidence Intervals Worksheet
A t test involves comparing the average between two different groups. For example, a new curriculum was implemented at a m ...
PSYC 4700 Capella University Week 6 T Tests and Confidence Intervals Worksheet
A t test involves comparing the average between two different groups. For example, a new curriculum was implemented at a middle school in the 2018–2019 school year in hopes of improving standardized test scores. To determine whether there was a difference in scores, leaders will conduct a t test using the data from the 2018–2019 school year and the previous school year, 2017–2018, as the two different groups. If scores improved, leaders are likely to implement it for the upcoming 2019–2020 school year to continue upward trends in student performance. Please complete the attached worksheet
The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste, statistics homework help
2a. The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste. A random sampl ...
The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste, statistics homework help
2a. The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste. A random sample of 60 people used the new toothpaste for 6-months. The mean number of cavities at their next checkup is 1.5. In the general population, the mean number of cavities at a 6-month check-up is 1.73 (0=1.12)Is this a one or two-tailed test?What are the H0 and Ha for this study?Compute Zobt-What is Zev?4a. Henry preformed a two-tailed test for an experiment in which N-24. He could not find his table of t critical values, but he remembered the tcv at df=13. He decided to compare his tobtwith this tcv. Is he more likely to make a Type I or a Type II error in this situation?6a. A researcher hypothesis that individuals who listen to classical music will score differently from the general population on a test of spatial ability. On a standardized test of spatial ability, u=58. A random sample of 14 individuals who listen to classical music is given the same test. Their scores on the test are 52,59,63,65,58,55,62,63,53,59,57,61,60,59.Is this a one or two-tailed test?What are the Ho and Ha for this study?Compute t-obt-What is tcv?Should Ho be rejected? What should the researcher conclude?Determine the 95% confidence interval for the population mean, based on the sample mean.8a. A researcher believes that the percentage of people who exercise in California is greater than the national exercise rate. The national rate is 20%. The researcher gathers random sample of the 20 individuals who live in California and finds that the number who exercise regularly is 31 out of 120.What is the obt?What is the df for this test?What is the cv?What conclusion should be drawn from these results?The researcher in exercise 2 decides to conduct the same study using a within-participants design to control for differences in cognitive ability. He selects a random sample of subjects and has them study different material of equal difficulty in both the music and no music conditions. The study is completely counterbalanced to control for order effects. The data appear next. As before, they are measured on an interval-ratio scale and are normally distributed; he believes that studying under quiet conditions will lead to better performance.MUSIC NO MUSIC7 76 85 76 78 98 8What statistical test should be used to analyze these data?Identify Ho and Ha for this study.Conduct the appropriate analysis.Should Ho be rejected? What should the researcher conclude?If significant, compute and interpret the effect size.If significant, draw a graph representing the data.Determine 95% confidence interval.Researchers at a food company are interested in how a new spaghetti sauce made from green tomatoes (and green in color) will compare to their traditional red spaghetti sauce. They are worried that the green color will adversely affect the tastiness scores. They randomly assign subjects to either the green or the red sauce condition. Participants indicate the tastiness of the sauce on a 10-point scale. Tastiness scores tend to be skewed. The scores are as follows.Red Sauce Green Sauce7 46 59 610 86 77 68 9What statistical test should be used to analyze these data?Identify Ho and Ha for this study.Conduct the appropriate analysis.Should Ho be rejected? What should the researcher conclude?You notice in your introductory psychology class that women tend to sit up front, and more men sit in the back. To determine whether this difference is significant, you collect data on the seating preferences for the students in your class. The data follow. Men WomenFront of the Room 15 27Back of the Room 32 19What is the obt?What is the dffor this test?What is the cv?What conclusion should be drawn from these results?What are degrees of freedom? How are the calculated?What do inferential statistics allow you to infer?What is the General Linear Model (GLM)? Why does it matter?Compare and contrast parametric and nonparametric statistics. Why and in what types of cases would you use one over the other?Why is it important to pay attention to the assumptions of the statistical test? What are your options if your dependent variable scores are not normally distributed?
Normal Distribution
Normal DistributionOne theory about the daily changes in the closing price of a stock is that these changes follow arandom ...
Normal Distribution
Normal DistributionOne theory about the daily changes in the closing price of a stock is that these changes follow arandom walk – that is, these daily events are independent of each other and move upward or downward in a random manner – and can be approximated by a normal distribution. To test this theory, collect the opening and closing prices of stocks from for your favorite company or brand.Initial Post:Choose your favorite company or brand and search finance.yahoo.com with that company name and “historical stock prices.” Download the stock history for this company for the past 6 weeks by selecting the appropriate dates and clicking on “Download to Spreadsheet” at the bottom of page.Calculate the daily change in the closing stock prices by taking the difference between the closing and opening price for the day. This is the daily stock change.Calculate the mean and standard deviation of the daily stock changes by running the Descriptive Statistics in Excel Data Analysis. Share the summary table.Consider the mean, median and mode (if it exists). Is your daily stock change distribution right skewed (median < mean), left skewed (mean < median), or symmetric (mean ≈ median)? What other considerations would you look at to determine whether or not this distribution is approximately normally distributed?See Example post.First response: Read a classmate’s response. Consider investing in your classmate’s stock and assume that the daily change is normally distributed. Using Normal.xlsx, your classmate’s mean and standard deviation, determine the probability for the daily change of this stock to have:A decrease of 0.5 point or more (X ≤ -0.5)?An increase of more than 0.5 point (X > 0.5)?A decrease of more 1 point or more (X ≤ -1)?An increase of more than 1 point (X > 1)?See Example post.Second Response: Read a different classmate’s response. Consider investing in your classmate’s stock and assume that it is normally distributed. If you wanted to be 95% sure of what the daily change would be, what range for a daily change would you expect? Use Normal.xlsx.See Example post.
3 pages
Network Diagram Pman635 Session 9 Ia 9
Problem: Given the information provided below (predecessors, normal time, normal cost, crash time (the minimum duration) a ...
Network Diagram Pman635 Session 9 Ia 9
Problem: Given the information provided below (predecessors, normal time, normal cost, crash time (the minimum duration) and crash cost (the cost if ...
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