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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
13 pages
Analysis.edited Final Copy
Discussion on whether the trading volume of the stock is normally distributed The following are the results after running ...
Analysis.edited Final Copy
Discussion on whether the trading volume of the stock is normally distributed The following are the results after running the data in SPSS on trading ...
Statistics problems
Word document with questions is also attached, and answers must be put into the attached answer sheet. 1.True or False. Ju ...
Statistics problems
Word document with questions is also attached, and answers must be put into the attached answer sheet. 1.True or False. Justify for full credit.(a) If the variance of a data set is zero, then all the observations in this data set are zero. (b) If P(A) = 0.4 , P(B) = 0.5, and A and B are disjoint, then P(A AND B) = 0.9.(c)Assume X follows a continuous distribution which is symmetric about 0.If , then . (d)A 95% confidence interval is wider than a 90% confidence interval of the same parameter. (e)In a right-tailed test, the value of the test statistic is 1.5. If we know the test statistic follows a Student’s t-distribution with P(T < 1.5) = 0.96, then we fail to reject the null hypothesis at 0.05 level of significance .Refer to the following frequency distribution for Questions 2, 3, 4, and 5. Show all work. Just the answer, without supporting work, will receive no credit. The frequency distribution below shows the distribution for checkout time (in minutes) in UMUC MiniMart between 3:00 and 4:00 PM on a Friday afternoon. Checkout Time (in minutes) Frequency Relative Frequency 1.0 - 1.9 3 2.0 - 2.9 12 3.0 - 3.9 0.20 4.0 - 4.9 3 5.0 -5.9 Total 25 2.Complete the frequency table with frequency and relative frequency. Express the relative frequency to two decimal places. 3.What percentage of the checkout times was at least 3 minutes?4.In what class interval must the median lie?Explain your answer.5.Does this distribution have positive skew or negative skew? Why?Refer to the following information for Questions 6 and 7.Show all work. Just the answer, without supporting work, will receive no credit. Consider selecting one card at a time from a 52-card deck.(Note: There are 4 aces in a deck of cards) 6.If the card selection is with replacement, what is the probability that the first card is an ace and the second card is also an ace?(Express the answer in simplest fraction form) 7.If the card selection is without replacement, what is the probability that the first card is an ace and the second card is also an ace?(Express the answer in simplest fraction form) Refer to the following situation for Questions 8, 9, and 10. The five-number summary below shows the grade distribution of two STAT 200 quizzes for a sample of 500 students. Minimum Q1 Median Q3 Maximum Quiz 1 15 30 55 85 100 Quiz 2 20 35 50 90 100 For each question, give your answer as one of the following:(a) Quiz 1; (b) Quiz 2; (c) Both quizzes have the same value requested; (d) It is impossible to tell using only the given information. Then explain your answer in each case.8.Which quiz has less interquartile range in grade distribution?9.Which quiz has the greater percentage of students with grades 90 and over?10.Which quiz has a greater percentage of students with grades less than 60?Refer to the following information for Questions 11, 12, and 13. Show all work. Just the answer, without supporting work, will receive no credit. There are 1000 students in a high school.Among the 1000 students, 800 students have a laptop, and 300 students have a tablet.250 students have both devices.11.What is the probability that a randomly selected student has neither device?12.What is the probability that a randomly selected student has a laptop, given that he/she has a tablet?13.Let event A be the selected student having a laptop, and event B be the selected student having a tablet. Are A and B independent events?Why or why not?14.A combination lock uses three distinctive numbers between 0 and 39 inclusive.How many different ways can a sequence of three numbers be selected? (Show work)15.Let random variable x represent the number of heads when a fair coin is tossed three times.Show all work. Just the answer, without supporting work, will receive no credit. (a)Construct a table describing the probability distribution. (b)( Determine the mean and standard deviation of x. (Round the answer to two decimal places) 16.Mimi just started her tennis class three weeks ago. On average, she is able to return 20% of her opponent’s serves.Assume her opponent serves 10 times.(a)Let X be the number of returns that Mimi gets.As we know, the distribution of X is a binomial probability distribution. What is the number of trials (n), probability of successes (p) and probability of failures (q), respectively? (b)Find the probability that that she returns at least 1 of the 10 serves from her opponent. (Show work) Refer to the following information for Questions 17, 18, and 19. Show all work. Just the answer, without supporting work, will receive no credit. The lengths of mature jalapeño fruits are normally distributed with a mean of 3 inches and a standard deviation of 1 inch.17.What is the probability that a randomly selected mature jalapeño fruit is between 1.5 and 4 inches long?18.Find the 90th percentile of the jalapeño fruit length distribution.19. If a random sample of 100 mature jalapeño fruits is selected, what is the standard deviation of the sample mean? 20.A random sample of 100 light bulbs has a mean lifetime of 3000 hours. Assume that the population standard deviation of the lifetime is 500 hours. Construct a 95% confidence interval estimate of the mean lifetime. Show all work. Just the answer, without supporting work, will receive no credit. 21.Consider the hypothesis test given byH p0 : 0.5 H p1 : 0.5In a random sample of 625 subjects, the sample proportion is found to be pˆ 0.55. (a)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (b)Determine the P-value for this test.Show all work; writing the correct P-value, without supporting work, will receive no credit.(c)Is there sufficient evidence to justify the rejection of H0 at the 0.01 level? Explain. 22.Consumption of large amounts of alcohol is known to increase reaction time. To investigate the effects of small amounts of alcohol, reaction time was recorded for five individuals before and after the consumption of 2 ounces of alcohol.Do the data below suggest that consumption of 2 ounces of alcohol increases mean reaction time? Reaction Time (seconds) Subject Before After 1 6 7 2 8 8 3 4 6 4 7 9 5 9 8 Assume we want to use a 0.05 significance level to test the claim. (a) Identify the null hypothesis and the alternative hypothesis.(b)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (c)Determine the P-value. Show all work; writing the correct P-value, without supporting work, will receive no credit. (d) Is there sufficient evidence to support the claim that consumption of 2 ounces of alcohol increases mean reaction time? Justify your conclusion. 23.The UMUC MiniMart sells five different types of coffee mugs.The manager reports that the five types are equally popular.Suppose that a sample of 500 purchases yields observed counts 120, 90, 110, 100, and 80 for types 1, 2, 3, 4, and 5, respectively. Type 1 2 3 4 5 Number of Mugs 120 90 110 100 80 Assume we want to use a 0.05 significance level to test the claim that the five types are equally popular. (a)Identify the null hypothesis and the alternative hypothesis.(b)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (c)Determine the P-value for the test. Show all work; writing the correct P-value, without supporting work, will receive no credit.(d)Is there sufficient evidence to support the manager’s claim that the four types are equally popular? Justify your answer.24.A random sample of 4 professional athletes produced the following data where x is the number of endorsements the player has and y is the amount of money made (in millions of dollars). x 0 1 3 5 y 1 2 5 8 (a)Find an equation of the least squares regression line.Show all work; writing the correct equation, without supporting work, will receive no credit.(b)Based on the equation from part (a), what is the predicted value of y if x = 2?Show all work and justify your answer.25. A STAT 200 instructor is interested in whether there is any variation in the final exam grades between her two classesData collected from the two classes are as follows: Her null hypothesis and alternative hypothesis are: (a)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (b)Determine the P-value for this test.Show all work; writing the correct P-value, without supporting work, will receive no credit.(c)Is there sufficient evidence to justify the rejection of H0 at the significance level of 0.05? Explain.
Answer the following
Must reflect your understanding of the material.Please see the Document attach (Instructions.docx) for information about t ...
Answer the following
Must reflect your understanding of the material.Please see the Document attach (Instructions.docx) for information about this work, you Must go through and over it. You Must include the screen photos or drawings as directed and needed. please provide DOC file or any other program file that you used to show your workcheck the files (.csv(dataset.zip)) and the ch15 to reach to the answer Complete and show the break down of work to reflect the understanding needed
Bernoulli process
A binomial random variable X is defined as the number of successes achieved in the n trials of a Bernoulli process. Descri ...
Bernoulli process
A binomial random variable X is defined as the number of successes achieved in the n trials of a Bernoulli process. Describe an event in your life that fits the properties of a Bernoulli process, being sure to explain how each property is met by your event. Finally, state the number of trials and the number of successes for your event. Be specific.The four properties for Bernoulli are,The experiment consists of a sequence of n identical trials.Two outcomes are possible on each trial. We refer to one outcome as a success and the other outcome as a failure.The probability of a success, denoted by p, does not change from trial to trial. Consequently, the probability of a failure, denoted by 1 − p, does not change from trial to trial.The trials are independent.
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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
13 pages
Analysis.edited Final Copy
Discussion on whether the trading volume of the stock is normally distributed The following are the results after running ...
Analysis.edited Final Copy
Discussion on whether the trading volume of the stock is normally distributed The following are the results after running the data in SPSS on trading ...
Statistics problems
Word document with questions is also attached, and answers must be put into the attached answer sheet. 1.True or False. Ju ...
Statistics problems
Word document with questions is also attached, and answers must be put into the attached answer sheet. 1.True or False. Justify for full credit.(a) If the variance of a data set is zero, then all the observations in this data set are zero. (b) If P(A) = 0.4 , P(B) = 0.5, and A and B are disjoint, then P(A AND B) = 0.9.(c)Assume X follows a continuous distribution which is symmetric about 0.If , then . (d)A 95% confidence interval is wider than a 90% confidence interval of the same parameter. (e)In a right-tailed test, the value of the test statistic is 1.5. If we know the test statistic follows a Student’s t-distribution with P(T < 1.5) = 0.96, then we fail to reject the null hypothesis at 0.05 level of significance .Refer to the following frequency distribution for Questions 2, 3, 4, and 5. Show all work. Just the answer, without supporting work, will receive no credit. The frequency distribution below shows the distribution for checkout time (in minutes) in UMUC MiniMart between 3:00 and 4:00 PM on a Friday afternoon. Checkout Time (in minutes) Frequency Relative Frequency 1.0 - 1.9 3 2.0 - 2.9 12 3.0 - 3.9 0.20 4.0 - 4.9 3 5.0 -5.9 Total 25 2.Complete the frequency table with frequency and relative frequency. Express the relative frequency to two decimal places. 3.What percentage of the checkout times was at least 3 minutes?4.In what class interval must the median lie?Explain your answer.5.Does this distribution have positive skew or negative skew? Why?Refer to the following information for Questions 6 and 7.Show all work. Just the answer, without supporting work, will receive no credit. Consider selecting one card at a time from a 52-card deck.(Note: There are 4 aces in a deck of cards) 6.If the card selection is with replacement, what is the probability that the first card is an ace and the second card is also an ace?(Express the answer in simplest fraction form) 7.If the card selection is without replacement, what is the probability that the first card is an ace and the second card is also an ace?(Express the answer in simplest fraction form) Refer to the following situation for Questions 8, 9, and 10. The five-number summary below shows the grade distribution of two STAT 200 quizzes for a sample of 500 students. Minimum Q1 Median Q3 Maximum Quiz 1 15 30 55 85 100 Quiz 2 20 35 50 90 100 For each question, give your answer as one of the following:(a) Quiz 1; (b) Quiz 2; (c) Both quizzes have the same value requested; (d) It is impossible to tell using only the given information. Then explain your answer in each case.8.Which quiz has less interquartile range in grade distribution?9.Which quiz has the greater percentage of students with grades 90 and over?10.Which quiz has a greater percentage of students with grades less than 60?Refer to the following information for Questions 11, 12, and 13. Show all work. Just the answer, without supporting work, will receive no credit. There are 1000 students in a high school.Among the 1000 students, 800 students have a laptop, and 300 students have a tablet.250 students have both devices.11.What is the probability that a randomly selected student has neither device?12.What is the probability that a randomly selected student has a laptop, given that he/she has a tablet?13.Let event A be the selected student having a laptop, and event B be the selected student having a tablet. Are A and B independent events?Why or why not?14.A combination lock uses three distinctive numbers between 0 and 39 inclusive.How many different ways can a sequence of three numbers be selected? (Show work)15.Let random variable x represent the number of heads when a fair coin is tossed three times.Show all work. Just the answer, without supporting work, will receive no credit. (a)Construct a table describing the probability distribution. (b)( Determine the mean and standard deviation of x. (Round the answer to two decimal places) 16.Mimi just started her tennis class three weeks ago. On average, she is able to return 20% of her opponent’s serves.Assume her opponent serves 10 times.(a)Let X be the number of returns that Mimi gets.As we know, the distribution of X is a binomial probability distribution. What is the number of trials (n), probability of successes (p) and probability of failures (q), respectively? (b)Find the probability that that she returns at least 1 of the 10 serves from her opponent. (Show work) Refer to the following information for Questions 17, 18, and 19. Show all work. Just the answer, without supporting work, will receive no credit. The lengths of mature jalapeño fruits are normally distributed with a mean of 3 inches and a standard deviation of 1 inch.17.What is the probability that a randomly selected mature jalapeño fruit is between 1.5 and 4 inches long?18.Find the 90th percentile of the jalapeño fruit length distribution.19. If a random sample of 100 mature jalapeño fruits is selected, what is the standard deviation of the sample mean? 20.A random sample of 100 light bulbs has a mean lifetime of 3000 hours. Assume that the population standard deviation of the lifetime is 500 hours. Construct a 95% confidence interval estimate of the mean lifetime. Show all work. Just the answer, without supporting work, will receive no credit. 21.Consider the hypothesis test given byH p0 : 0.5 H p1 : 0.5In a random sample of 625 subjects, the sample proportion is found to be pˆ 0.55. (a)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (b)Determine the P-value for this test.Show all work; writing the correct P-value, without supporting work, will receive no credit.(c)Is there sufficient evidence to justify the rejection of H0 at the 0.01 level? Explain. 22.Consumption of large amounts of alcohol is known to increase reaction time. To investigate the effects of small amounts of alcohol, reaction time was recorded for five individuals before and after the consumption of 2 ounces of alcohol.Do the data below suggest that consumption of 2 ounces of alcohol increases mean reaction time? Reaction Time (seconds) Subject Before After 1 6 7 2 8 8 3 4 6 4 7 9 5 9 8 Assume we want to use a 0.05 significance level to test the claim. (a) Identify the null hypothesis and the alternative hypothesis.(b)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (c)Determine the P-value. Show all work; writing the correct P-value, without supporting work, will receive no credit. (d) Is there sufficient evidence to support the claim that consumption of 2 ounces of alcohol increases mean reaction time? Justify your conclusion. 23.The UMUC MiniMart sells five different types of coffee mugs.The manager reports that the five types are equally popular.Suppose that a sample of 500 purchases yields observed counts 120, 90, 110, 100, and 80 for types 1, 2, 3, 4, and 5, respectively. Type 1 2 3 4 5 Number of Mugs 120 90 110 100 80 Assume we want to use a 0.05 significance level to test the claim that the five types are equally popular. (a)Identify the null hypothesis and the alternative hypothesis.(b)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (c)Determine the P-value for the test. Show all work; writing the correct P-value, without supporting work, will receive no credit.(d)Is there sufficient evidence to support the manager’s claim that the four types are equally popular? Justify your answer.24.A random sample of 4 professional athletes produced the following data where x is the number of endorsements the player has and y is the amount of money made (in millions of dollars). x 0 1 3 5 y 1 2 5 8 (a)Find an equation of the least squares regression line.Show all work; writing the correct equation, without supporting work, will receive no credit.(b)Based on the equation from part (a), what is the predicted value of y if x = 2?Show all work and justify your answer.25. A STAT 200 instructor is interested in whether there is any variation in the final exam grades between her two classesData collected from the two classes are as follows: Her null hypothesis and alternative hypothesis are: (a)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (b)Determine the P-value for this test.Show all work; writing the correct P-value, without supporting work, will receive no credit.(c)Is there sufficient evidence to justify the rejection of H0 at the significance level of 0.05? Explain.
Answer the following
Must reflect your understanding of the material.Please see the Document attach (Instructions.docx) for information about t ...
Answer the following
Must reflect your understanding of the material.Please see the Document attach (Instructions.docx) for information about this work, you Must go through and over it. You Must include the screen photos or drawings as directed and needed. please provide DOC file or any other program file that you used to show your workcheck the files (.csv(dataset.zip)) and the ch15 to reach to the answer Complete and show the break down of work to reflect the understanding needed
Bernoulli process
A binomial random variable X is defined as the number of successes achieved in the n trials of a Bernoulli process. Descri ...
Bernoulli process
A binomial random variable X is defined as the number of successes achieved in the n trials of a Bernoulli process. Describe an event in your life that fits the properties of a Bernoulli process, being sure to explain how each property is met by your event. Finally, state the number of trials and the number of successes for your event. Be specific.The four properties for Bernoulli are,The experiment consists of a sequence of n identical trials.Two outcomes are possible on each trial. We refer to one outcome as a success and the other outcome as a failure.The probability of a success, denoted by p, does not change from trial to trial. Consequently, the probability of a failure, denoted by 1 − p, does not change from trial to trial.The trials are independent.
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