You are a researcher working for an educational research firm. Your firm was asked to conduct a satisfaction survey among the parents of students attending the School District public schools. Your boss has asked you to develop a sampling design for this survey.
For this survey, you are asked to select a representative sample of parents. When you answer the questions, keep the following in mind:
1. Describe your population. Elaborate on the specifics of your population.
2. Describe your sampling frame. Be specific in your descriptions. Where would you find the information to define it? Remember that you have full authority to access all the information available, (You just need to know whom to ask and what to ask for.)
3. If you use a simple random sampling design, what is the minimum sample size you will need to determine the percentage (proportion) of those parents who are satisfied with the public schools at the 4% accuracy level, with the 95% confidence level? Explain how you determined your sample size.
You are a researcher working for an educational research firm. Your firm was asked to conduct...
On June 4–24, 2007, the Gallup Poll asked a nationwide sample of adult Americans about their attitude toward interracial marriage. Of the 2388 adults interviewed, 77% said that they approve of marriage between whites and blacks. a. Is this number (77%) a parameter or a statistic? Explain briefly. b. What kind of graph would be appropriate for displaying the results of this survey—a dotplot or a bar graph? Explain briefly. (Do not create the graph.) c. Identify the sample size...
3) Suppose you are an educational researcher who wishes to examine the effect of a school district's class size on its student achievement. Specifically, you are interested in whether in the U.S., on average, school districts with smaller class sizes perform differently on test scores than school districts with larger class sizes. To test this, you have conducted two surveys. The first survey randomly sampled 238 school districts with small class sizes. This survey found a sample average test score...
Your game company recently released a new game. You want to find out more about those playing the game. You are interested in information about how much and why they play as well as in knowing more about their general demographics like gender, age, income, etc. Design a survey process that would allow you to find out this information. For the survey sample, you should include what the population is, the sampling method used, and how many will be surveyed....
One of the partners at your firm has asked you to develop an office training presentation to familiarize your audit team with sampling models that can be used for auditing monetary balances. The partner wants you to include the following information in your presentation: The relationship of sample sizes to population sizes. Estimated population exception rate. The acceptable guidelines for establishing tolerable misstatement. Your presentation should meet the following criteria: Be 6-8 slides in length, not including the title and...
You have been recently hired as an Epidemiological Research Assistant at your county’s Health Department. It is only day 1 on the job and you have been asked to develop a presentation for the County Commissioners describing a health disparity within your community. In your report, you are asked to summarize the demographical information about the population, as well as summarize the health disparity. The County Commissioners ask that you present your findings in a PowerPoint® presentation. In statistics or...
If you have been asked to sample 60 people from a chosen population for an observational study. You need to ask a question that separates the sample into two groups, so that you can compare results of another question across the two groups. Therefore, your survey will only be two questions: two numerical data questions or one numerical and one categorical question.
attached is the question and the information to complete the question. Thank you so much for your help! Now we need to locate our sample mean on the sampling distribution and see if it falls into an extreme (significance) area. If so, we would be able to reject the null hypothesis and say that the household sizes in my neighborhood are indeed significantly different from the city population of households. To figure out the position of our sample mean on...
After reading the case study below Identify and justify one long-term and one short-term plan for the future direction of FBPS. Provide specific, cited examples from the case study, and integrate outside sources to strengthen and support your claims of why these goals are needed. Make sure each paragraph in this section is at least 3 sentences. The following case study is based on true events. Names and identifying details have been modified. Freeman-Brown Private School (FBPS), based in Illinois,...
Design an entity-relationship diagram for the problem statement below - justify any need for null values For this project, you must help design and implement a database for an organization whose goal is to promote and support STEM education in your state. Middle/high school teachers and parents of students in such schools (a parent may be an educator too) can become members by paying a yearly fee of $25. Each member is reminded about the need for membership renewal one...
Design an entity-relationship diagram for the problem statement below - justify any need for null values For this project, you must help design and implement a database for an organization whose goal is to promote and support STEM education in your state. Middle/high school teachers and parents of students in such schools (a parent may be an educator too) can become members by paying a yearly fee of $25. Each member is reminded about the need for membership renewal one...