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(3x+4)+(-4x+8)
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(3x+4)+(-4x+8)
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Construct the 95% confidence interval.
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WEEK 6 Assignment: Testing Hypotheses for Means
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WEEK 6 Assignment: Testing Hypotheses for Means
Assignment: Testing Hypotheses for MeansThis week you have explored three different approaches to t tests. By this point, you know that each test has assumptions about the data and type of research questions it can answer. For this Assignment, you will be provided with three scenarios. As you read the scenarios, be sure and think about aligning the appropriate t test with the question. Consider whether the data are independent samples and if two samples are being compared.To prepare for this Assignment:Review the Learning Resources and the media programs related to t tests.For additional support, review the Skill Builder: Research Design and Statistical Design and the Skill Builder: Hypothesis Testing for Independent Samples t-test, 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.Also, review the t test scenarios found in this week’s Learning Resources and consider the three different approaches of t tests:Independent sample t testPaired sample t testOne sample t testBased on each of the three research scenarios provided, open the High School Longitudinal Study dataset or the Afrobarometer dataset from this week’s Learning Resources using SPSS software, then choose and run the appropriate t test.Once you perform your t test analyses, review Chapter 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 t test results for each research scenario and include the SPSS syntax and output. 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. Do not forget to evaluate if the t test assumptions are met, justify the selection of type of t test, and report the effect size. Based on your results, provide an explanation of what the implications of social change might be.Use proper APA format, citations, and referencing for your analysis, research questions, and output.
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T-Tests; quantitative research
t-TestsUsing the attached data (i.e., "job satisfaction" and "practice"), perform one analysis (i.e., Part A or B) using a dependent (or paired) samples t-test and the other (i.e., Part A or B) using the independent samples t-test. Determine appropriate test for each relationship, and then proceed with your analyses. (To be clear, you are required to perform TWO t-tests in this submission.)Part AThirty teachers at ACE Charter School were given a 20% raise in their salary in August of 2015. How was their job satisfaction ("0" = very unsatisfied to "50" = very satisfied) affected as a result? (Note: You can make causal inferences in this analysis.)What is the research question? (Use "difference" language as we are no longer talking about "relationship" among variables but differences between groups.)What is the null hypothesis?What is the research hypothesis? (Directional)Basic descriptive analysis appropriate for the variables used (e.g., mean, median, range, SD, etc.) in a paragraph form. (Don't just include a number of SPSS tables and not talk about it.)State the rationale for applying either independent or dependent t-test in this investigation using appropriate readings and resources in Module 6. (Please cite specific references.)Write out the results in an APA format. Please include appropriate tables from the SPSS output used in your analyses.Part BUsing a sample of 575 participants, compare the average years of education (variable name = "educ") between men and women in River Forest, IL . (Note: Avoid causal inferences here, and just talk about the differences between men and women in the analysis.)What is the research question? (Use "difference" language as we are no longer talking about "relationship" among variables but differences between groups.)What is the null hypothesis?What is the research hypothesis? (Non-Directional)Basic descriptive analysis appropriate for the variables used (e.g., mean, median, range, SD, etc.) in a paragraph form. (Don't just include a number of SPSS tables and not talk about it.)State the rationale for applying either independent or dependent t-test for in this investigation using appropriate readings and resources in Module 6. (Please cite specific references.) Write out the results in an APA format.Please include appropriate tables from the SPSS output used in your analyses.An Example of a Paired-Samples t-Test Result Write Up“Using a sample of 99 participants, a paired-sample t-test was conducted to compare the number of words recalled (from 0 to 15) in ginkgo and placebo conditions. There was a significant difference in the number of words recalled for ginkgo (M = 6.23, SD = 3.91) and placebo (M = 4.35, SD = 3.45) conditions; t(99) = 4.12, p < .001. These results suggest that consumption of ginkgo is related to a significant or meaningful increase in one’s memory, by about two points. The size of the effect is moderate at .51.”An Example of an Independent Samples t-Test Result Write Up“Using a sample of 200 participants, an independent samples t-test was conducted to compare the number of words recalled (from 0 to 15) in ginkgo (n = 100) and placebo (n = 100) groups. There was a significant difference in the number of words recalled for ginkgo (M = 7.95, SD = 3.91) and placebo (M = 5.85, SD = 3.60) groups; t(198) = 1.99, p = .03. These results suggest that ginkgo group had greater word recall than their placebo counterparts, by about two words. The size of the effect is small at .27.”
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Most Popular Content
Construct the 95% confidence interval.
A 99% confidence interval (in inches) for the mean height of a population is 66.2 < μ < 67.6. This result is based ...
Construct the 95% confidence interval.
A 99% confidence interval (in inches) for the mean height of a population is 66.2 < μ < 67.6. This result is based on a sample of size 144. Construct the 95% confidence interval. (Hint: you will first need to find the sample mean and sample standard deviation).
6 pages
Module1hw
Before beginning this homework, be sure to read the textbook sections and the Type your solutions into this document and b ...
Module1hw
Before beginning this homework, be sure to read the textbook sections and the Type your solutions into this document and be sure to show all steps for ...
6 pages
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The event is false because consumers do not behave in a rational way in all the times. Human beings by their nature are ea ...
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The event is false because consumers do not behave in a rational way in all the times. Human beings by their nature are easily distracted beings ...
Business Statistics-Conditional Probability
Your
initial post should be 75-150 words in length.Conditional Probability1. If there are 3 green marbles
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Business Statistics-Conditional Probability
Your
initial post should be 75-150 words in length.Conditional Probability1. If there are 3 green marbles
and 4 red marbles in a bag, and you were asked to draw one without
looking, what is the probability of drawing one green marble? Please show work 2. If you don't put that marble back, what is the probability of drawing another green marble? Please show work 3. Using the above "marbles in the bag" scenario, what is a conditional probability question that you can make from it? In §4.4 we are introduced to the
concept of conditional probability. The notation P(A | B) denotes the
probability of event A occurring given that we know event B has
occurred.Now consider the Monty Hall Problem introduced in the following video: https://m.youtube.com/watch?v=4Lb-6rxZxx0 4. After watching this video, we
know that if we are given the option to switch doors that,
probabilistically speaking, it is in our best interest to switch. Why is
the probability of winning NOT 50/50 when the contestant is given the
opportunity to switch?Please provide original work. No plagiarizing.
WEEK 6 Assignment: Testing Hypotheses for Means
Assignment: Testing Hypotheses for MeansThis week you have explored three different approaches to t tests. By this point, ...
WEEK 6 Assignment: Testing Hypotheses for Means
Assignment: Testing Hypotheses for MeansThis week you have explored three different approaches to t tests. By this point, you know that each test has assumptions about the data and type of research questions it can answer. For this Assignment, you will be provided with three scenarios. As you read the scenarios, be sure and think about aligning the appropriate t test with the question. Consider whether the data are independent samples and if two samples are being compared.To prepare for this Assignment:Review the Learning Resources and the media programs related to t tests.For additional support, review the Skill Builder: Research Design and Statistical Design and the Skill Builder: Hypothesis Testing for Independent Samples t-test, 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.Also, review the t test scenarios found in this week’s Learning Resources and consider the three different approaches of t tests:Independent sample t testPaired sample t testOne sample t testBased on each of the three research scenarios provided, open the High School Longitudinal Study dataset or the Afrobarometer dataset from this week’s Learning Resources using SPSS software, then choose and run the appropriate t test.Once you perform your t test analyses, review Chapter 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 t test results for each research scenario and include the SPSS syntax and output. 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. Do not forget to evaluate if the t test assumptions are met, justify the selection of type of t test, and report the effect size. Based on your results, provide an explanation of what the implications of social change might be.Use proper APA format, citations, and referencing for your analysis, research questions, and output.
T-Tests; quantitative research
t-TestsUsing the attached data (i.e., "job satisfaction" and "practice"), perform one analysis (i.e., Part A or B) using a ...
T-Tests; quantitative research
t-TestsUsing the attached data (i.e., "job satisfaction" and "practice"), perform one analysis (i.e., Part A or B) using a dependent (or paired) samples t-test and the other (i.e., Part A or B) using the independent samples t-test. Determine appropriate test for each relationship, and then proceed with your analyses. (To be clear, you are required to perform TWO t-tests in this submission.)Part AThirty teachers at ACE Charter School were given a 20% raise in their salary in August of 2015. How was their job satisfaction ("0" = very unsatisfied to "50" = very satisfied) affected as a result? (Note: You can make causal inferences in this analysis.)What is the research question? (Use "difference" language as we are no longer talking about "relationship" among variables but differences between groups.)What is the null hypothesis?What is the research hypothesis? (Directional)Basic descriptive analysis appropriate for the variables used (e.g., mean, median, range, SD, etc.) in a paragraph form. (Don't just include a number of SPSS tables and not talk about it.)State the rationale for applying either independent or dependent t-test in this investigation using appropriate readings and resources in Module 6. (Please cite specific references.)Write out the results in an APA format. Please include appropriate tables from the SPSS output used in your analyses.Part BUsing a sample of 575 participants, compare the average years of education (variable name = "educ") between men and women in River Forest, IL . (Note: Avoid causal inferences here, and just talk about the differences between men and women in the analysis.)What is the research question? (Use "difference" language as we are no longer talking about "relationship" among variables but differences between groups.)What is the null hypothesis?What is the research hypothesis? (Non-Directional)Basic descriptive analysis appropriate for the variables used (e.g., mean, median, range, SD, etc.) in a paragraph form. (Don't just include a number of SPSS tables and not talk about it.)State the rationale for applying either independent or dependent t-test for in this investigation using appropriate readings and resources in Module 6. (Please cite specific references.) Write out the results in an APA format.Please include appropriate tables from the SPSS output used in your analyses.An Example of a Paired-Samples t-Test Result Write Up“Using a sample of 99 participants, a paired-sample t-test was conducted to compare the number of words recalled (from 0 to 15) in ginkgo and placebo conditions. There was a significant difference in the number of words recalled for ginkgo (M = 6.23, SD = 3.91) and placebo (M = 4.35, SD = 3.45) conditions; t(99) = 4.12, p < .001. These results suggest that consumption of ginkgo is related to a significant or meaningful increase in one’s memory, by about two points. The size of the effect is moderate at .51.”An Example of an Independent Samples t-Test Result Write Up“Using a sample of 200 participants, an independent samples t-test was conducted to compare the number of words recalled (from 0 to 15) in ginkgo (n = 100) and placebo (n = 100) groups. There was a significant difference in the number of words recalled for ginkgo (M = 7.95, SD = 3.91) and placebo (M = 5.85, SD = 3.60) groups; t(198) = 1.99, p = .03. These results suggest that ginkgo group had greater word recall than their placebo counterparts, by about two words. The size of the effect is small at .27.”
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