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Most Popular Content
7 pages
Statquiz
Lab Assignment 6: Dependent Samples t-tests, One-tail vs. Two-tail testing Due Date: March 22nd (Submit to Canvas by 11:59 ...
Statquiz
Lab Assignment 6: Dependent Samples t-tests, One-tail vs. Two-tail testing Due Date: March 22nd (Submit to Canvas by 11:59pm) 1) “I believe that the ...
STA 3215 RC Inferential Statistics Analytics Hypothesis Tests Excel Worksheet
CompetencyGiven a real-life application, develop a hypothesis test for a population parameter and its interpretation.Instr ...
STA 3215 RC Inferential Statistics Analytics Hypothesis Tests Excel Worksheet
CompetencyGiven a real-life application, develop a hypothesis test for a population parameter and its interpretation.InstructionsScenario (information repeated for deliverable 01, 03, and 04)A major client of your company is interested in the salary distributions of jobs in the state of Minnesota that range from $30,000 to $200,000 per year. As a Business Analyst, your boss asks you to research and analyze the salary distributions. You are given a spreadsheet that contains the following information:A listing of the jobs by titleThe salary (in dollars) for each jobIn prior engagements, you have already explained to your client about the basic statistics and discussed the importance of constructing confidence intervals for the population mean. Your client says that he remembers a little bit about hypothesis testing, but he is a little fuzzy. He asks you to give him the full explanation of all steps in a hypothesis testing and wants your conclusion about a claim that the average salary for all jobs in the state of Minnesota is less than $75,000.Background information on the DataThe data set in the spreadsheet consists of 364 records that you will be analyzing from the Bureau of Labor Statistics. The data set contains a listing of several jobs titles with yearly salaries ranging from approximately $30,000 to $200,000 for the state of Minnesota.What to SubmitYour boss wants you to submit the spreadsheet with the completed calculations. Your research and analysis should be present within the answers provided on the worksheet. Grading RubricFFCBA01234Not SubmittedNo PassCompetenceProficiencyMasteryNot SubmittedDid not correctly solve a majority of the problems or at least one problem left blank.Correctly solved a majority of the problems.Correctly solved almost all the problems.All problems are solved correctly.Not SubmittedVery few steps are provided to explain how to solve the problem OR the steps provided have several errors.Fairly complete and detailed steps are provided to explain how to solve the problem OR the steps provided have some errors.Mostly complete and detailed steps are provided to explain how to solve the problem.Complete and detailed steps are provided to explain how to solve the problem.Not SubmittedExplanations generally lack a basic understanding of the statistical concepts or lack of proper terminology.Explanations demonstrate a basic understanding of most of the statistical concepts and terminology, but some explanations may be incomplete or incorrect.Explanations demonstrate a proficient understanding of most of the statistical concepts and terminology, but with small errors.Explanations demonstrate a mastery of understanding of the statistical concepts and terminology.Not SubmittedThe majority of variables, equations, and expressions are not properly formatted.The majority of variables, equations, and expressions are properly formatted.Almost all variables, equations, and expressions are properly formatted.All variables, equations, and expressions are properly formatted.
Week 4 Weather Conditions Element Variable or Observation Midterm
MidtermThere are 8 questions in total, each worth 12.5 points. Please upload your answers to the dropbox. The Grantham La ...
Week 4 Weather Conditions Element Variable or Observation Midterm
MidtermThere are 8 questions in total, each worth 12.5 points. Please upload your answers to the dropbox. The Grantham Late policy applies to the midterm, and it is a 5% deduction per late day. Remember that work is required. That work may be calculations, a computer printout, an Excel program - but there has to be something that shows where numbers came from. This midterm may only be taken one time.
Question 1The following shows the temperatures (high, low) and weather conditions in a given Sunday for some selected world cities. For the weather conditions, the following notations are used: c = clear; cl = cloudy; sh = showers; pc = partly cloudy.Is “condition” an element, variable, or observation?Provide the observation for Mexico City.Give an example of a quantitative variable.Provide the range for the low temperature.What is the mode for the high temperature?Explain why the "lo" is not ordinal.
Question 2A student has completed 16 courses in the School of Arts and Sciences. Her grades in the 16 courses are shown below.DDCDABFAAACBBCCDDevelop a frequency distribution table for her grades.Create a bar chart for her grades. Remember the importance of good titles and labeled axes.All the courses are three credits except for the two that are highlighted. They are science courses and are worth 5 credits each. Using a weighted mean, calculate the student's grade point average. A = 4.0; B= 3.0; C= 2.0; D =1.0; F = 0
Question 3The number of hours worked per week for a sample of ten students is shown below.StudentHours1332403154255156307328109151035Determine the mean, median, and mode.Explain which of the three values (mean, median, mode) is the best representation of central tendency in this particular set of data. (This is not an "in general" question.)What is the standard deviation for the number of hours worked? What does standard deviation tell us?Create a histogram for this data. Discuss whether or not this data is normally distributed. Justify your answer.
Question 4You are given the following information on Events A, B, C, and D.P(A) = .5P(B) = .3P (C) = .20P(A U D) = .8P(A ∩ C) = 0.05P (A │B) = 0.22P (A ∩ D) = 0.25Compute P(D).Compute P(A ∩ B).Compute P(A | C).Compute the probability of the complement of C.What does it mean to be mutually exclusive? Give an example.
Question 5When a particular machine is functioning properly, 80% of the items produced are non-defective. If seven items are examined, what is the probability that three are defective?If seven items are examined, what is the probability at at least three are non-defective?If seven items are examined, what is the probability that at most, one is defective?What is the expected number of defective items if ten items are examined?
Question 6The average starting salary of this year’s graduates of a large university (LU) is $34,000 with a standard deviation of $7,000. Furthermore, it is known that the starting salaries are normally distributed.What is the probability that a randomly selected LU graduate will have a starting salary of at least $32,000?Individuals with starting salaries of less than $19,900 receive a low income tax break. What percentage of the graduates will receive the tax break?What percent of graduates will have their salaries one standard deviation from the mean?What is the range of salaries that is one standard deviation from the mean? What is the range of salaries that are two standard deviations from the mean?
Question 7A simple random sample of 8 computer programmers revealed the sex of the programmers and the following information about their weekly incomes.ProgrammerWeekly IncomeSexA$550MB$654MC$911FD$500ME$727MF$688FG$1000FH$892MIf all the salaries were written on separate pieces of paper, and one was drawn at random, what is the probability that the one that was drawn would be over $700?If a programmer were selected at random to complete a project, what would the probability be that the programmer was male?What is the probability of selecting an income of under $700 per week given that a male was selected?If all the salaries with the name of who earned it were written on separate pieces of paper and two were drawn at random (the first one was NOT returned to the pile), what is the probability that both were female?If all the salaries with the name of who earned it were written on separate pieces of paper and two were drawn at random (the first one was NOT returned to the pile), what is the probability that the first draw would be the salary of a male and the second would be one of a female?
Question 8Students of a large university spend an average of $7 a day on lunch. The standard deviation of the expenditure is $2. A simple random sample of 25 students is taken.What is the probability that the sample mean will be at least $4?Jason spent $15 on his lunch. Explain, in terms of standard deviation, why his expenditure is not usual.Explain what information is given on a z table. For example, if a student calculated a z value of 2.77, what is the four-digit number on the z table that corresponds with that value? What exactly is that 4-digit number telling us?Explain why we use z formulas. Why don't we just leave the data alone? Why do we convert?Grading Criteria AssignmentsMaximum PointsMeets or exceeds established assignment criteria40Demonstrates an understanding of lesson concepts20Clearly presents well-reasoned ideas and concepts30Uses proper mechanics, punctuation, sentence structure, and spelling10Total100
4 pages
Employee Engagement Survey Design
1. Are you familiar with what is expected out of you at the workplace? 3. Does the company offer motivation rewards or rec ...
Employee Engagement Survey Design
1. Are you familiar with what is expected out of you at the workplace? 3. Does the company offer motivation rewards or recognition for good ...
Response to classmate
Respond to at least one colleagues’ post with a comment on the presentation and interpretation of their analysis. In you ...
Response to classmate
Respond to at least one colleagues’ post with a comment on the presentation and interpretation of their analysis. In your response, address the following questions:Was the presentation of results clear? If so, provide some specific comments on why. If not, provide constructive suggestions.Are you able to understand how the results might relate back to positive social change? Do you think there are other aspects of positive social change related to the results?
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Most Popular Content
7 pages
Statquiz
Lab Assignment 6: Dependent Samples t-tests, One-tail vs. Two-tail testing Due Date: March 22nd (Submit to Canvas by 11:59 ...
Statquiz
Lab Assignment 6: Dependent Samples t-tests, One-tail vs. Two-tail testing Due Date: March 22nd (Submit to Canvas by 11:59pm) 1) “I believe that the ...
STA 3215 RC Inferential Statistics Analytics Hypothesis Tests Excel Worksheet
CompetencyGiven a real-life application, develop a hypothesis test for a population parameter and its interpretation.Instr ...
STA 3215 RC Inferential Statistics Analytics Hypothesis Tests Excel Worksheet
CompetencyGiven a real-life application, develop a hypothesis test for a population parameter and its interpretation.InstructionsScenario (information repeated for deliverable 01, 03, and 04)A major client of your company is interested in the salary distributions of jobs in the state of Minnesota that range from $30,000 to $200,000 per year. As a Business Analyst, your boss asks you to research and analyze the salary distributions. You are given a spreadsheet that contains the following information:A listing of the jobs by titleThe salary (in dollars) for each jobIn prior engagements, you have already explained to your client about the basic statistics and discussed the importance of constructing confidence intervals for the population mean. Your client says that he remembers a little bit about hypothesis testing, but he is a little fuzzy. He asks you to give him the full explanation of all steps in a hypothesis testing and wants your conclusion about a claim that the average salary for all jobs in the state of Minnesota is less than $75,000.Background information on the DataThe data set in the spreadsheet consists of 364 records that you will be analyzing from the Bureau of Labor Statistics. The data set contains a listing of several jobs titles with yearly salaries ranging from approximately $30,000 to $200,000 for the state of Minnesota.What to SubmitYour boss wants you to submit the spreadsheet with the completed calculations. Your research and analysis should be present within the answers provided on the worksheet. Grading RubricFFCBA01234Not SubmittedNo PassCompetenceProficiencyMasteryNot SubmittedDid not correctly solve a majority of the problems or at least one problem left blank.Correctly solved a majority of the problems.Correctly solved almost all the problems.All problems are solved correctly.Not SubmittedVery few steps are provided to explain how to solve the problem OR the steps provided have several errors.Fairly complete and detailed steps are provided to explain how to solve the problem OR the steps provided have some errors.Mostly complete and detailed steps are provided to explain how to solve the problem.Complete and detailed steps are provided to explain how to solve the problem.Not SubmittedExplanations generally lack a basic understanding of the statistical concepts or lack of proper terminology.Explanations demonstrate a basic understanding of most of the statistical concepts and terminology, but some explanations may be incomplete or incorrect.Explanations demonstrate a proficient understanding of most of the statistical concepts and terminology, but with small errors.Explanations demonstrate a mastery of understanding of the statistical concepts and terminology.Not SubmittedThe majority of variables, equations, and expressions are not properly formatted.The majority of variables, equations, and expressions are properly formatted.Almost all variables, equations, and expressions are properly formatted.All variables, equations, and expressions are properly formatted.
Week 4 Weather Conditions Element Variable or Observation Midterm
MidtermThere are 8 questions in total, each worth 12.5 points. Please upload your answers to the dropbox. The Grantham La ...
Week 4 Weather Conditions Element Variable or Observation Midterm
MidtermThere are 8 questions in total, each worth 12.5 points. Please upload your answers to the dropbox. The Grantham Late policy applies to the midterm, and it is a 5% deduction per late day. Remember that work is required. That work may be calculations, a computer printout, an Excel program - but there has to be something that shows where numbers came from. This midterm may only be taken one time.
Question 1The following shows the temperatures (high, low) and weather conditions in a given Sunday for some selected world cities. For the weather conditions, the following notations are used: c = clear; cl = cloudy; sh = showers; pc = partly cloudy.Is “condition” an element, variable, or observation?Provide the observation for Mexico City.Give an example of a quantitative variable.Provide the range for the low temperature.What is the mode for the high temperature?Explain why the "lo" is not ordinal.
Question 2A student has completed 16 courses in the School of Arts and Sciences. Her grades in the 16 courses are shown below.DDCDABFAAACBBCCDDevelop a frequency distribution table for her grades.Create a bar chart for her grades. Remember the importance of good titles and labeled axes.All the courses are three credits except for the two that are highlighted. They are science courses and are worth 5 credits each. Using a weighted mean, calculate the student's grade point average. A = 4.0; B= 3.0; C= 2.0; D =1.0; F = 0
Question 3The number of hours worked per week for a sample of ten students is shown below.StudentHours1332403154255156307328109151035Determine the mean, median, and mode.Explain which of the three values (mean, median, mode) is the best representation of central tendency in this particular set of data. (This is not an "in general" question.)What is the standard deviation for the number of hours worked? What does standard deviation tell us?Create a histogram for this data. Discuss whether or not this data is normally distributed. Justify your answer.
Question 4You are given the following information on Events A, B, C, and D.P(A) = .5P(B) = .3P (C) = .20P(A U D) = .8P(A ∩ C) = 0.05P (A │B) = 0.22P (A ∩ D) = 0.25Compute P(D).Compute P(A ∩ B).Compute P(A | C).Compute the probability of the complement of C.What does it mean to be mutually exclusive? Give an example.
Question 5When a particular machine is functioning properly, 80% of the items produced are non-defective. If seven items are examined, what is the probability that three are defective?If seven items are examined, what is the probability at at least three are non-defective?If seven items are examined, what is the probability that at most, one is defective?What is the expected number of defective items if ten items are examined?
Question 6The average starting salary of this year’s graduates of a large university (LU) is $34,000 with a standard deviation of $7,000. Furthermore, it is known that the starting salaries are normally distributed.What is the probability that a randomly selected LU graduate will have a starting salary of at least $32,000?Individuals with starting salaries of less than $19,900 receive a low income tax break. What percentage of the graduates will receive the tax break?What percent of graduates will have their salaries one standard deviation from the mean?What is the range of salaries that is one standard deviation from the mean? What is the range of salaries that are two standard deviations from the mean?
Question 7A simple random sample of 8 computer programmers revealed the sex of the programmers and the following information about their weekly incomes.ProgrammerWeekly IncomeSexA$550MB$654MC$911FD$500ME$727MF$688FG$1000FH$892MIf all the salaries were written on separate pieces of paper, and one was drawn at random, what is the probability that the one that was drawn would be over $700?If a programmer were selected at random to complete a project, what would the probability be that the programmer was male?What is the probability of selecting an income of under $700 per week given that a male was selected?If all the salaries with the name of who earned it were written on separate pieces of paper and two were drawn at random (the first one was NOT returned to the pile), what is the probability that both were female?If all the salaries with the name of who earned it were written on separate pieces of paper and two were drawn at random (the first one was NOT returned to the pile), what is the probability that the first draw would be the salary of a male and the second would be one of a female?
Question 8Students of a large university spend an average of $7 a day on lunch. The standard deviation of the expenditure is $2. A simple random sample of 25 students is taken.What is the probability that the sample mean will be at least $4?Jason spent $15 on his lunch. Explain, in terms of standard deviation, why his expenditure is not usual.Explain what information is given on a z table. For example, if a student calculated a z value of 2.77, what is the four-digit number on the z table that corresponds with that value? What exactly is that 4-digit number telling us?Explain why we use z formulas. Why don't we just leave the data alone? Why do we convert?Grading Criteria AssignmentsMaximum PointsMeets or exceeds established assignment criteria40Demonstrates an understanding of lesson concepts20Clearly presents well-reasoned ideas and concepts30Uses proper mechanics, punctuation, sentence structure, and spelling10Total100
4 pages
Employee Engagement Survey Design
1. Are you familiar with what is expected out of you at the workplace? 3. Does the company offer motivation rewards or rec ...
Employee Engagement Survey Design
1. Are you familiar with what is expected out of you at the workplace? 3. Does the company offer motivation rewards or recognition for good ...
Response to classmate
Respond to at least one colleagues’ post with a comment on the presentation and interpretation of their analysis. In you ...
Response to classmate
Respond to at least one colleagues’ post with a comment on the presentation and interpretation of their analysis. In your response, address the following questions:Was the presentation of results clear? If so, provide some specific comments on why. If not, provide constructive suggestions.Are you able to understand how the results might relate back to positive social change? Do you think there are other aspects of positive social change related to the results?
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