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Stratford University Central Limit Theorem Research Paper
A. Week 5 Post (300+ words):Collect some quantitative data (if your data from week 1 is quantitative, you can use it) ...
Stratford University Central Limit Theorem Research Paper
A. Week 5 Post (300+ words):Collect some quantitative data (if your data from week 1 is quantitative, you can use it). Find the sample mean and standard deviation. Plot it in a histogram. Does the data seem to follow the bell curve of the normal distribution? What features of the data do or do not fit in with the shape of the normal curve. How much deviation from the curve is to be expected?Now perform a normality test on your data (Shapiro-Wilk test: http://sdittami.altervista.org/shapirotest/ShapiroTest.html or http://www.brianreedpowers.com/MAT240/stats/descriptiveStats.html)– the test will give you a p-value. The higher the p-value, the more closely your data follows the normal distribution. Based on the test, do you think your data could have been drawn from a normal distribution?B. 1. Assume that X has a normal distribution, and find the indicated probability.The mean is μ = 60.0 and the standard deviation is σ = 4.0.Find the probability that X is less than 53.0.2. Assume that X has a normal distribution, and find the indicated probability.The mean is μ = 15.2 and the standard deviation is σ = 0.9.Find the probability that X is greater than 15.2.3. Assume that X has a normal distribution, and find the indicated probability.The mean is μ= 15.2 and the standard deviation is σ = 0.9.Find the probability that X is greater than 16.1.4. Assume that X has a normal distribution, and find the indicated probability.The mean is μ = 15.2 and the standard deviation is σ = 0.9.Find the probability that X is greater than 17.5. Assume that X has a normal distribution, and find the indicated probability.The mean is μ = 15.2 and the standard deviation is σ = 0.9.Find the probability that X is between 14.3 and 16.1.6. Assume that X has a normal distribution, and find the indicated probability.The mean is μ = 22.0 and the standard deviation is σ = 2.4.Find the probability that X is between 19.7 and 25.3.7. Assume that X has a normal distribution, and find the indicated probability.The mean is μ = 137.0 and the standard deviation is σ = 5.3.Find the probability that X is between 134.4 and 140.1.8. Find the indicated probability.The diameters of bolts produced by a certain machine are normally distributed with a mean of 0.30 inches and a standard deviation of 0.01 inches. What percentage of bolts will have a diameter greater than 0.32 inches?9. Find the indicated probability.The incomes of trainees at a local mill are normally distributed with a mean of $1100 and a standard deviation of $150. What percentage of trainees earn less than $900 a month?10. Find the indicated probability.The volumes of soda in quart soda bottles are normally distributed with a mean of 32.3 oz and a standard deviation of 1.2 oz. What is the probability that the volume of soda in a randomly selected bottle will be less than 32 oz?
Statistics Treating Depression Recurrence Relative to The Placebo Lab Part 1 Discussion
Learn by Doing
In this activity, you will investigate the first question related to the study described below.
Some ...
Statistics Treating Depression Recurrence Relative to The Placebo Lab Part 1 Discussion
Learn by Doing
In this activity, you will investigate the first question related to the study described below.
Some features of this activity may not work well on a cell phone or tablet. We highly recommend that you complete this activity on a computer.
Here are the directions and grading rubric for the Learn by Doing discussion board exercises.
A list of StatCrunch directions is provided at the bottom of this page.
Context
Clinical depression is a recurrent illness requiring treatment and often hospitalization. Nearly 50% of people who have an episode of major depression will have a recurrence within 2-3 years. Being able to prevent the recurrence of depression in people who are at risk for the disease would go a long way to alleviate the pain and suffering of patients.
During the 1980's the federal government, through the National Institutes of Health (NIH), sponsored a large clinical trial to evaluate two drugs for depression. There were 3 treatment groups. Patients received either Imipramine (Imip), Lithium (Li), or a Placebo (Pl). Researchers randomly assigned patients to one of the 3 treatment groups and followed them for 2-4 years to track any recurrences of depression.
(Prien et al., Archives of General Psychiatry, 1984).
Variables
Hospt: Which hospital the patient was from: Labeled 1, 2, 3, 5 or 6
Treat: 0=Lithium; 1=Imipramine; 2=Placebo
Outcome: 0=Success 1=Failure (recurrence of depression)
Time: Number of weeks until a recurrence (if outcome=1) or until study ended (if outcome=0)
AcuteT: How long the patient was depressed before the start of the current study, measured in days
Age: Age in years
Gender: 1=Female 2=Male
Data
If you have not done so already, download the depression datafile (as always, if a login box opens, just close it and then download the file). Then upload the file in StatCrunch.
Prompt
We will analyze the data to answer the 1st research question: Which of the drugs (if either) was more successful in preventing the recurrence of depression relative to the placebo?
In the previous lab-preparation activity, we determined that we will analyze the data using a two-way table and conditional percentages.
Use StatCrunch to produce a two-way contingency table. (directions)
Copy the table in your StatCrunch output window and paste it in your initial discussion post. (directions)
After you paste the content of the your StatCrunch output window into your discussion post, keep the table titled Contingency table results: and delete the Chi-Square results: table.
Analyze the data in your two-way table by finding appropriate conditional percentages. Write each conditional percentage as a ratio (e.g. 25 out of 40) and as a percentage (e.g. 25/40 = 62.5%). Then write a sentence that explains the meaning of the percentage in the context of the research question.
Draw a conclusion. Based on this study, which drug was the most effective in preventing the recurrence of depression? Support your conclusion using conditional percentages.
Rational Exponents, algebra homework help
1) Which of the following shows the expression below in radical form?A.B.C.D.2) Which of the following shows the expressio ...
Rational Exponents, algebra homework help
1) Which of the following shows the expression below in radical form?A.B.C.D.2) Which of the following shows the expression below in radical form?A.B.C.D.3) Which of the following shows the expression below in exponential form?A.B.C.D.4) Evaluate the expression.A) 6.4B) 33554432C) 2D) 165) Evaluate the expression.A) 3B) 1C) 0D) 96) Simplify the expression.A.B.C.D.7) Simplify the expression.A.B.C.D.8) Simplify the expression.A. B. C. D.
Part 1 and Part 2 Testing for Multiple Regression
To prepare for this Part 1 of your Assignment:Review this week’s Learning Resources and media program related to multipl ...
Part 1 and Part 2 Testing for Multiple Regression
To prepare for this Part 1 of your Assignment:Review this week’s Learning Resources and media program related to multiple regression.Using the SPSS software, open the Afrobarometer dataset or the High School Longitudinal Study dataset (whichever you choose) found in the Learning Resources for this week.Based on the dataset you chose, construct a research question that can be answered with a multiple regression analysis.Once you perform your multiple regression analysis, review Chapter 11 of the Wagner text to understand how to copy and paste your output into your Word document.For this Part 1 Assignment:Write a 1- to 2-page analysis of your multiple regression results for each research question. In your analysis, display the data for the output. 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 question, and display of output.Part 2To prepare for this Part 2 of your Assignment:Review Warner’s Chapter 12 and Chapter 2 of the Wagner course text and the media program found in this week’s Learning Resources and consider the use of dummy variables.Using the SPSS software, open the Afrobarometer dataset or the High School Longitudinal Study dataset (whichever you choose) found in this week’s Learning Resources.Consider the following:Create a research question with metric variables and one variable that requires dummy coding. Estimate the model and report results. Note: You are expected to perform regression diagnostics and report that as well.Once you perform your analysis, review Chapter 11 of the Wagner text to understand how to copy and paste your output into your Word document.For this Part 2 Assignment:Write a 2- to 3-page analysis of your multiple regression using dummy variables results for each research question. In your analysis, display the data for the output. 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 question, and display of outpu
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Stratford University Central Limit Theorem Research Paper
A. Week 5 Post (300+ words):Collect some quantitative data (if your data from week 1 is quantitative, you can use it) ...
Stratford University Central Limit Theorem Research Paper
A. Week 5 Post (300+ words):Collect some quantitative data (if your data from week 1 is quantitative, you can use it). Find the sample mean and standard deviation. Plot it in a histogram. Does the data seem to follow the bell curve of the normal distribution? What features of the data do or do not fit in with the shape of the normal curve. How much deviation from the curve is to be expected?Now perform a normality test on your data (Shapiro-Wilk test: http://sdittami.altervista.org/shapirotest/ShapiroTest.html or http://www.brianreedpowers.com/MAT240/stats/descriptiveStats.html)– the test will give you a p-value. The higher the p-value, the more closely your data follows the normal distribution. Based on the test, do you think your data could have been drawn from a normal distribution?B. 1. Assume that X has a normal distribution, and find the indicated probability.The mean is μ = 60.0 and the standard deviation is σ = 4.0.Find the probability that X is less than 53.0.2. Assume that X has a normal distribution, and find the indicated probability.The mean is μ = 15.2 and the standard deviation is σ = 0.9.Find the probability that X is greater than 15.2.3. Assume that X has a normal distribution, and find the indicated probability.The mean is μ= 15.2 and the standard deviation is σ = 0.9.Find the probability that X is greater than 16.1.4. Assume that X has a normal distribution, and find the indicated probability.The mean is μ = 15.2 and the standard deviation is σ = 0.9.Find the probability that X is greater than 17.5. Assume that X has a normal distribution, and find the indicated probability.The mean is μ = 15.2 and the standard deviation is σ = 0.9.Find the probability that X is between 14.3 and 16.1.6. Assume that X has a normal distribution, and find the indicated probability.The mean is μ = 22.0 and the standard deviation is σ = 2.4.Find the probability that X is between 19.7 and 25.3.7. Assume that X has a normal distribution, and find the indicated probability.The mean is μ = 137.0 and the standard deviation is σ = 5.3.Find the probability that X is between 134.4 and 140.1.8. Find the indicated probability.The diameters of bolts produced by a certain machine are normally distributed with a mean of 0.30 inches and a standard deviation of 0.01 inches. What percentage of bolts will have a diameter greater than 0.32 inches?9. Find the indicated probability.The incomes of trainees at a local mill are normally distributed with a mean of $1100 and a standard deviation of $150. What percentage of trainees earn less than $900 a month?10. Find the indicated probability.The volumes of soda in quart soda bottles are normally distributed with a mean of 32.3 oz and a standard deviation of 1.2 oz. What is the probability that the volume of soda in a randomly selected bottle will be less than 32 oz?
Statistics Treating Depression Recurrence Relative to The Placebo Lab Part 1 Discussion
Learn by Doing
In this activity, you will investigate the first question related to the study described below.
Some ...
Statistics Treating Depression Recurrence Relative to The Placebo Lab Part 1 Discussion
Learn by Doing
In this activity, you will investigate the first question related to the study described below.
Some features of this activity may not work well on a cell phone or tablet. We highly recommend that you complete this activity on a computer.
Here are the directions and grading rubric for the Learn by Doing discussion board exercises.
A list of StatCrunch directions is provided at the bottom of this page.
Context
Clinical depression is a recurrent illness requiring treatment and often hospitalization. Nearly 50% of people who have an episode of major depression will have a recurrence within 2-3 years. Being able to prevent the recurrence of depression in people who are at risk for the disease would go a long way to alleviate the pain and suffering of patients.
During the 1980's the federal government, through the National Institutes of Health (NIH), sponsored a large clinical trial to evaluate two drugs for depression. There were 3 treatment groups. Patients received either Imipramine (Imip), Lithium (Li), or a Placebo (Pl). Researchers randomly assigned patients to one of the 3 treatment groups and followed them for 2-4 years to track any recurrences of depression.
(Prien et al., Archives of General Psychiatry, 1984).
Variables
Hospt: Which hospital the patient was from: Labeled 1, 2, 3, 5 or 6
Treat: 0=Lithium; 1=Imipramine; 2=Placebo
Outcome: 0=Success 1=Failure (recurrence of depression)
Time: Number of weeks until a recurrence (if outcome=1) or until study ended (if outcome=0)
AcuteT: How long the patient was depressed before the start of the current study, measured in days
Age: Age in years
Gender: 1=Female 2=Male
Data
If you have not done so already, download the depression datafile (as always, if a login box opens, just close it and then download the file). Then upload the file in StatCrunch.
Prompt
We will analyze the data to answer the 1st research question: Which of the drugs (if either) was more successful in preventing the recurrence of depression relative to the placebo?
In the previous lab-preparation activity, we determined that we will analyze the data using a two-way table and conditional percentages.
Use StatCrunch to produce a two-way contingency table. (directions)
Copy the table in your StatCrunch output window and paste it in your initial discussion post. (directions)
After you paste the content of the your StatCrunch output window into your discussion post, keep the table titled Contingency table results: and delete the Chi-Square results: table.
Analyze the data in your two-way table by finding appropriate conditional percentages. Write each conditional percentage as a ratio (e.g. 25 out of 40) and as a percentage (e.g. 25/40 = 62.5%). Then write a sentence that explains the meaning of the percentage in the context of the research question.
Draw a conclusion. Based on this study, which drug was the most effective in preventing the recurrence of depression? Support your conclusion using conditional percentages.
Rational Exponents, algebra homework help
1) Which of the following shows the expression below in radical form?A.B.C.D.2) Which of the following shows the expressio ...
Rational Exponents, algebra homework help
1) Which of the following shows the expression below in radical form?A.B.C.D.2) Which of the following shows the expression below in radical form?A.B.C.D.3) Which of the following shows the expression below in exponential form?A.B.C.D.4) Evaluate the expression.A) 6.4B) 33554432C) 2D) 165) Evaluate the expression.A) 3B) 1C) 0D) 96) Simplify the expression.A.B.C.D.7) Simplify the expression.A.B.C.D.8) Simplify the expression.A. B. C. D.
Part 1 and Part 2 Testing for Multiple Regression
To prepare for this Part 1 of your Assignment:Review this week’s Learning Resources and media program related to multipl ...
Part 1 and Part 2 Testing for Multiple Regression
To prepare for this Part 1 of your Assignment:Review this week’s Learning Resources and media program related to multiple regression.Using the SPSS software, open the Afrobarometer dataset or the High School Longitudinal Study dataset (whichever you choose) found in the Learning Resources for this week.Based on the dataset you chose, construct a research question that can be answered with a multiple regression analysis.Once you perform your multiple regression analysis, review Chapter 11 of the Wagner text to understand how to copy and paste your output into your Word document.For this Part 1 Assignment:Write a 1- to 2-page analysis of your multiple regression results for each research question. In your analysis, display the data for the output. 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 question, and display of output.Part 2To prepare for this Part 2 of your Assignment:Review Warner’s Chapter 12 and Chapter 2 of the Wagner course text and the media program found in this week’s Learning Resources and consider the use of dummy variables.Using the SPSS software, open the Afrobarometer dataset or the High School Longitudinal Study dataset (whichever you choose) found in this week’s Learning Resources.Consider the following:Create a research question with metric variables and one variable that requires dummy coding. Estimate the model and report results. Note: You are expected to perform regression diagnostics and report that as well.Once you perform your analysis, review Chapter 11 of the Wagner text to understand how to copy and paste your output into your Word document.For this Part 2 Assignment:Write a 2- to 3-page analysis of your multiple regression using dummy variables results for each research question. In your analysis, display the data for the output. 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 question, and display of outpu
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