Description
consider a population having a standard deviation equal to 5.0 we wish to estimate the mean of this population. how large a random sample is needed to construct a 99 percentile confidence interval for the mean of this population with a margin of error equal to .2?
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Explanation & Answer
We want the max deviation of estimate from the mean: |X-mu| = 0.2
We want the confidence interval to be 1% or 0.5% from either side of the bell curve
From the normal distribution table we find that for this we must have: |X-mu|/(sigma/sqrt(n))<2.57
thus: (sigma/sqrt(n))<0.2/2.57
we have sigma =5 so sqrt (n) > 5*2.57/0.2 => n> (5*2.57/0.2)^2=4128
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San Diego State University Stem Survey Venn Diagram & Data Analysis Questions
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A survey of 500 adults was conducted to determine why more undergraduate students do not pursue degrees in science, technology, engineering, and math (STEM). The results of the survey show that 250 respondents believed that students do not pursue STEM degrees because the subjects are too difficult, while 105 respondents believed it is because the subjects do not have applications in their careers. There were ten respondents who believed both, difficulty and lack of applications, were the reasons why no more students pursue STEM degrees.
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Define two sets to represent the two different opinions of the survey’s respondents.
Create a Venn diagram to represent the results of this survey.
How many respondents believed students do not pursue STEM degrees only because the subjects are too difficult?
How many respondents believed students do not pursue STEM degrees only because the subjects do not have applications in their careers?
How many respondents believed that neither the difficulty nor the lack of applications of the subjects are reasons why students do not pursue STEM degrees?
Part II: Based on your work in Part I, discuss the following:
Use an alternative method to define the sets in Part I.
Explain how you created the Venn diagram. Describe how you found the numbers corresponding to each region.
Discuss how you can use set operations to answer questions three through five in Part I.
Discuss how the numbers on the Venn diagram would have changed if the total respondents who believed students do not pursue STEM degrees because of the lack of applications increased to 250. What would this imply for the answers to questions three through five in Part I?
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You must submit two files for this assignment. The first file should contain the computations, graphs, diagrams, etc., associated with the questions in Part I. This file may be formatted as a numbered list of answers. Unless stated in the problem, a narrative discussion is not required, but you must provide enough information to show how you arrived at the answer.
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Your paper should be 2-3 pages in length (not counting the title page and references page) and should cite and integrate at least two credible outside sources. The CSU-Global Library is a great place to find resources. Your textbook is a credible resource.
Include a title page, introduction, body, conclusion, and a reference page.
The introduction should describe or summarize the topic or problem. It might discuss the general applications of the topic or it might introduce the unique terminology associated with the topic.
The body of your paper should address the questions posed in the problem. Explain how you approached and answered the question or solved the problem, and, for each question, show all steps involved. Be sure this is in paragraph format, not numbered answers like a homework assignment.
The conclusion should summarize your thoughts about what you have determined from your analysis in completing the assignment. Nothing new should be introduced in the conclusion that was not previously discussed in the body paragraphs.
Include any tables of data or calculations, calculated values, and/or graphs referenced in the paper. (Note: The minimum required length excludes any tables, graphs, etc.)
Document formatting, citations, and style should conform to the CSU Global Guide to Writing and APA Requirements (Links to an external site.). A short summary containing much that you need to know about paper formatting, citations, and references is contained in the Template Paper (Links to an external site.). If you need assistance with your writing style or you need writing tips or tutorials, visit the CSU Global Writing Center (Links to an external site.).
References
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Most Popular Content
10 pages
Lane And Illowsky
The critical value for the 99% confidence interval is more than the critical value for 95% confidence interval making it m ...
Lane And Illowsky
The critical value for the 99% confidence interval is more than the critical value for 95% confidence interval making it more wider due to increase in ...
Rasmussen College Confidence Interval for A Population Parameter Stats Practice
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Develop a confidence interval for a population parameter.
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Rasmussen College Confidence Interval for A Population Parameter Stats Practice
Competency
Develop a confidence interval for a population parameter.
Instructions
Scenario (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 title
The salary (in dollars) for each job
Deliverable 3 - Confidence Intervals.xlsx
You have previously explained some of the basic statistics to your client already, and he really liked your work. Now he wants you to analyze the confidence intervals.
Background information on the Data
The 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.
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For this project you will write an original research question on any topic in the Health Sciences and create a fictitious ...
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For this project you will write an original research question on any topic in the Health Sciences and create a fictitious data set to analyze your data using Excel and answer your research question. Then, you will summarize your findings in a journal-style results section including any tables or statistical output you deem necessary to explain your findings. At a minimum, include the following: research question, null and alternate hypotheses, independent and dependent variable, description of the statistical test used, your results from that test using your fictitious data and concluding statements relating back to your hypotheses. Do not simply include your statistical output. Instead, make sure you explain and interpret the statistical output.
San Diego State University Stem Survey Venn Diagram & Data Analysis Questions
Option #1: STEM Survey
For this Critical Thinking assignment, you will analyze survey results using concepts from set theo ...
San Diego State University Stem Survey Venn Diagram & Data Analysis Questions
Option #1: STEM Survey
For this Critical Thinking assignment, you will analyze survey results using concepts from set theory.
A survey of 500 adults was conducted to determine why more undergraduate students do not pursue degrees in science, technology, engineering, and math (STEM). The results of the survey show that 250 respondents believed that students do not pursue STEM degrees because the subjects are too difficult, while 105 respondents believed it is because the subjects do not have applications in their careers. There were ten respondents who believed both, difficulty and lack of applications, were the reasons why no more students pursue STEM degrees.
Part I: Complete the following steps:
Define two sets to represent the two different opinions of the survey’s respondents.
Create a Venn diagram to represent the results of this survey.
How many respondents believed students do not pursue STEM degrees only because the subjects are too difficult?
How many respondents believed students do not pursue STEM degrees only because the subjects do not have applications in their careers?
How many respondents believed that neither the difficulty nor the lack of applications of the subjects are reasons why students do not pursue STEM degrees?
Part II: Based on your work in Part I, discuss the following:
Use an alternative method to define the sets in Part I.
Explain how you created the Venn diagram. Describe how you found the numbers corresponding to each region.
Discuss how you can use set operations to answer questions three through five in Part I.
Discuss how the numbers on the Venn diagram would have changed if the total respondents who believed students do not pursue STEM degrees because of the lack of applications increased to 250. What would this imply for the answers to questions three through five in Part I?
Discuss the advantages of using a Venn diagram to analyze the results of this survey.
Provide an example of a real-world survey that could be modeled using the Venn diagram below.
Requirements:
You must submit two files for this assignment. The first file should contain the computations, graphs, diagrams, etc., associated with the questions in Part I. This file may be formatted as a numbered list of answers. Unless stated in the problem, a narrative discussion is not required, but you must provide enough information to show how you arrived at the answer.
The second file should be a 2-3-page narrative paper, written in APA format, associated with the situation described in Part II. Specific requirements for the paper are provided below:
Your paper should be 2-3 pages in length (not counting the title page and references page) and should cite and integrate at least two credible outside sources. The CSU-Global Library is a great place to find resources. Your textbook is a credible resource.
Include a title page, introduction, body, conclusion, and a reference page.
The introduction should describe or summarize the topic or problem. It might discuss the general applications of the topic or it might introduce the unique terminology associated with the topic.
The body of your paper should address the questions posed in the problem. Explain how you approached and answered the question or solved the problem, and, for each question, show all steps involved. Be sure this is in paragraph format, not numbered answers like a homework assignment.
The conclusion should summarize your thoughts about what you have determined from your analysis in completing the assignment. Nothing new should be introduced in the conclusion that was not previously discussed in the body paragraphs.
Include any tables of data or calculations, calculated values, and/or graphs referenced in the paper. (Note: The minimum required length excludes any tables, graphs, etc.)
Document formatting, citations, and style should conform to the CSU Global Guide to Writing and APA Requirements (Links to an external site.). A short summary containing much that you need to know about paper formatting, citations, and references is contained in the Template Paper (Links to an external site.). If you need assistance with your writing style or you need writing tips or tutorials, visit the CSU Global Writing Center (Links to an external site.).
References
(Adapted from) Kennedy, B., Hefferon, M., & Funk, C. (2018). Half of Americans think young people don’t pursue STEM because it is too hard. Pew Research Center. Retrieved from https://www.pewresearch.org/fact-tank/2018/01/17/half-of-americans-think-young-people-dont-pursue-stem-because-it-is-too-hard/
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