Description
Which of the following values are not needed to construct a 95% prediction interval for a value of y?
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Explanation & Answer
Prediction interval is a value in which future observations will fall with certain probability given the observation
Standard error provides good estimate .prediction interval takes all the y-VALUES, so there is inclusion of predicted y and the actual y
E(y} euals x]
the correct answer is D,TAKES ALL THE ABOVE
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This quiz asks questions about fundamental statistical concepts, including two types of hypothesis tests.
The first, a hypothesis test involving a single mean, is exemplified by another question about sardines. (There are not m ...
This quiz asks questions about fundamental statistical concepts, including two types of hypothesis tests.
The first, a hypothesis test involving a single mean, is exemplified by another question about sardines. (There are not many exciting examples that illustrate this type of test.). The second type of hypothesis test is much more interesting and it involves the difference between two means (we call this a "difference in means" test.). You have been calculating differences in means using the health survey data; in this quiz, you will carry out a difference-in-means test using data on bicycle trip duration.*** Note: All the questions, except the last one, are answerable using pen and paper. Indeed, you will come away from this class with a much better understanding of the concepts if you try to work through them "by hand" rather than first going to the computer or calculator. Thus, in addition to answering the quiz, you are required to send to me your written answers. You may scan you answers and email to me a pdf or type up your answers in Word and email it to me. You must turn in individual, NOT group, writeups, and cases of clear copying will be considered cheating and given a final score of 0.1. True or False. In statistics, the result that in large enough samples, the mean of a random variableis normally distributed, regardless of how the random variable is distributed, is called the CentralLimit Theorem2.You observe five random numbers: 2,2,3,4,4. The mean of this data is 3. What is the standard deviation? (This should be done with a pen and paper, and the formula on p. 36, note 16 of(1,3,2,0.5)3.For a random variable with the mean and standard deviation you found in Question 2 above, what is standard deviation of the sample average in repeated samples where n=5? (In other words, what is the standard error of the sample mean when n=5?). Hints: To calculate the standard error, use the formula given in equation 1.6 of Mastering Metrics. The square root of 5 is 2.25.8/9 1 2 2/9 4/94. On a can of sardines it is written that the can contains 10 sardines. You open up 100 cans andfind the average is 9.75 sardines with a standard deviation of 1. What is the test statistic in a testof the null hypothesis that the population average is 10? Can you reject the null at the 5%significance level?-2.5; no -2.5; yes -.25; no-.25; yes5.The table below contains the raw data from Professor Rietz’s six bike trips between the trainstation and the MLK library. In addition to the date of the trip and the duration, it also tells thestarting location and the ending location. Time is in minutes, rounded to the nearest wholenumber. As you can infer, Prof. Rietz arrives at the train station at the start of the day, bikes tocampus, works on campus, and then bikes back to the station at the end of the day.The average duration of trips starting at the Train Station was ___ while the average duration oftrips starting at the Library was ___6; 1010; 69; 77; 96.Consider a test of the null hypothesis that there is no difference between the average duration oftrips that start at the Library and trips that start at the Train Station. Which of the following is theapproximate value of the appropriate test statistic for such a test? (Hint: use the test statisticformula in the middle of page 45 of MM; for the standard error that appears in the denominatorof the test statistic formula, use the separate-variance formula that appears in footnote 17.)3.81.22.44.23.77.True or False: Given the value of the test statistic you found above, is the effect of starting location on trip duration statistically significant?T/F
Lesson 14 - Probability, algebra homework help
Answer the following question. --LINK-- http://ogburn.org/wp-content/uploads/2016/05/Alg-I.... PLEASE ANSWER IN A WORD DOC ...
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Answer the following question. --LINK-- http://ogburn.org/wp-content/uploads/2016/05/Alg-I.... PLEASE ANSWER IN A WORD DOCUMENT
MATH 221 DeVry University Week 6 Confidence Intervals Statistics Lab Report
MATH221 Statistics for Decision Making Week 6 Lab Name:_______________________ Statistical Concepts: Confidence In ...
MATH 221 DeVry University Week 6 Confidence Intervals Statistics Lab Report
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Hypothesis Testing discussion
Employees from Company A and Company B both receive annual bonuses. What
information would you need to test the claim th ...
Hypothesis Testing discussion
Employees from Company A and Company B both receive annual bonuses. What
information would you need to test the claim that the difference in
annual bonuses is greater than $100 at the 0.05 level of significance?
Write out the hypothesis and explain the testing procedure.
Click here to watch the video
RSCH 8210/7210/6210: QUANTITATIVE REASONING AND ANALYSIS Walden University Multiple Regression Paper
To prepare for this Discussion:Review this week’s Learning Resources and media program related to multiple regression.Cr ...
RSCH 8210/7210/6210: QUANTITATIVE REASONING AND ANALYSIS Walden University Multiple Regression Paper
To prepare for this Discussion:Review this week’s Learning Resources and media program related to multiple regression.Create a research question using the General Social Survey that can be answered by multiple regression.By Day 3Use SPSS to answer the research question. Post your response to the following:What is your research question?What is the null hypothesis for your question?What research design would align with this question?What dependent variable was used and how is it measured?What independent variable is used and how is it measured?What other variables were added to the multiple regression models as controls?What is the justification for adding the variables?If you found significance, what is the strength of the effect?Explain your results for a lay audience, explain what the answer to your research question.
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This quiz asks questions about fundamental statistical concepts, including two types of hypothesis tests.
The first, a hypothesis test involving a single mean, is exemplified by another question about sardines. (There are not m ...
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The first, a hypothesis test involving a single mean, is exemplified by another question about sardines. (There are not many exciting examples that illustrate this type of test.). The second type of hypothesis test is much more interesting and it involves the difference between two means (we call this a "difference in means" test.). You have been calculating differences in means using the health survey data; in this quiz, you will carry out a difference-in-means test using data on bicycle trip duration.*** Note: All the questions, except the last one, are answerable using pen and paper. Indeed, you will come away from this class with a much better understanding of the concepts if you try to work through them "by hand" rather than first going to the computer or calculator. Thus, in addition to answering the quiz, you are required to send to me your written answers. You may scan you answers and email to me a pdf or type up your answers in Word and email it to me. You must turn in individual, NOT group, writeups, and cases of clear copying will be considered cheating and given a final score of 0.1. True or False. In statistics, the result that in large enough samples, the mean of a random variableis normally distributed, regardless of how the random variable is distributed, is called the CentralLimit Theorem2.You observe five random numbers: 2,2,3,4,4. The mean of this data is 3. What is the standard deviation? (This should be done with a pen and paper, and the formula on p. 36, note 16 of(1,3,2,0.5)3.For a random variable with the mean and standard deviation you found in Question 2 above, what is standard deviation of the sample average in repeated samples where n=5? (In other words, what is the standard error of the sample mean when n=5?). Hints: To calculate the standard error, use the formula given in equation 1.6 of Mastering Metrics. The square root of 5 is 2.25.8/9 1 2 2/9 4/94. On a can of sardines it is written that the can contains 10 sardines. You open up 100 cans andfind the average is 9.75 sardines with a standard deviation of 1. What is the test statistic in a testof the null hypothesis that the population average is 10? Can you reject the null at the 5%significance level?-2.5; no -2.5; yes -.25; no-.25; yes5.The table below contains the raw data from Professor Rietz’s six bike trips between the trainstation and the MLK library. In addition to the date of the trip and the duration, it also tells thestarting location and the ending location. Time is in minutes, rounded to the nearest wholenumber. As you can infer, Prof. Rietz arrives at the train station at the start of the day, bikes tocampus, works on campus, and then bikes back to the station at the end of the day.The average duration of trips starting at the Train Station was ___ while the average duration oftrips starting at the Library was ___6; 1010; 69; 77; 96.Consider a test of the null hypothesis that there is no difference between the average duration oftrips that start at the Library and trips that start at the Train Station. Which of the following is theapproximate value of the appropriate test statistic for such a test? (Hint: use the test statisticformula in the middle of page 45 of MM; for the standard error that appears in the denominatorof the test statistic formula, use the separate-variance formula that appears in footnote 17.)3.81.22.44.23.77.True or False: Given the value of the test statistic you found above, is the effect of starting location on trip duration statistically significant?T/F
Lesson 14 - Probability, algebra homework help
Answer the following question. --LINK-- http://ogburn.org/wp-content/uploads/2016/05/Alg-I.... PLEASE ANSWER IN A WORD DOC ...
Lesson 14 - Probability, algebra homework help
Answer the following question. --LINK-- http://ogburn.org/wp-content/uploads/2016/05/Alg-I.... PLEASE ANSWER IN A WORD DOCUMENT
MATH 221 DeVry University Week 6 Confidence Intervals Statistics Lab Report
MATH221 Statistics for Decision Making Week 6 Lab Name:_______________________ Statistical Concepts: Confidence In ...
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Hypothesis Testing discussion
Employees from Company A and Company B both receive annual bonuses. What
information would you need to test the claim th ...
Hypothesis Testing discussion
Employees from Company A and Company B both receive annual bonuses. What
information would you need to test the claim that the difference in
annual bonuses is greater than $100 at the 0.05 level of significance?
Write out the hypothesis and explain the testing procedure.
Click here to watch the video
RSCH 8210/7210/6210: QUANTITATIVE REASONING AND ANALYSIS Walden University Multiple Regression Paper
To prepare for this Discussion:Review this week’s Learning Resources and media program related to multiple regression.Cr ...
RSCH 8210/7210/6210: QUANTITATIVE REASONING AND ANALYSIS Walden University Multiple Regression Paper
To prepare for this Discussion:Review this week’s Learning Resources and media program related to multiple regression.Create a research question using the General Social Survey that can be answered by multiple regression.By Day 3Use SPSS to answer the research question. Post your response to the following:What is your research question?What is the null hypothesis for your question?What research design would align with this question?What dependent variable was used and how is it measured?What independent variable is used and how is it measured?What other variables were added to the multiple regression models as controls?What is the justification for adding the variables?If you found significance, what is the strength of the effect?Explain your results for a lay audience, explain what the answer to your research question.
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