What sample size is needed to give a margin of error within +6 in estimating a population mean with 99% confidence, assuming a previous sample had s = 16. Round your answer up to the nearest integer.
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A: The sample size n is 67.
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A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…
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A: It is given that margin of error (E) is 0.04 and the confidence level is 99%.Here,
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Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…
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A: The confidence interval is an interval of estimating the unknown value of the population parameter,…
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A: The formula for calculating sample size is, n = z2*p^(1-p^)MOE2 Where, z is the z score (default…
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A: Given: The margin of error = 3%=0.03 Confidence level = 98% Since the proportion is students is not…
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A: Given that the confidence interval for a population is 152 to 160. σ=16
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A: From the provided information,
Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…
A: GivenMargin of error(E)=0.03confidence level(c)=99%α=1-0.99=0.01α2=0.05zα2=z0.05=1.6449 (from…
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A: here given , sample size n = 5000 and sample proportion car having cameras = 10005000 = 0.2
Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…
A: Solution: From the given information, confidence level is 0.99, p=0.25 and E=0.03.
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A: It is given that margin of error (E) is 0.06 and the confidence level is 0.95.
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A: Given data, E=4 z-value at 91% confidence is Zc= 1.70 σ2=15.5σ=3.937n=?
Q: 1. Given: n=130, a = 25, level of confidence is 90%. What is the margin of error of the given data?
A: The sample size is given as 130, n=130 The standard deviation is given as 25, σ=25 The Confidence…
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A: Given,margin of error(E)=0.04sample proportion(p^)=0.19α=1-0.93=0.07α2=0.035Z0.035=1.8119…
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A: Given data Error = 0.02 Confidence level = 0.95
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A: Given information:Margin of error (E) = 0.04Confidence level=90%…
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Q: At 90% confidence, how large a sample should be taken to obtain a margin of error of 0.047 for the…
A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…
Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny . What…
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Q: What does brand loyalty mean to consumers? According to a recent research report, 37% of consumers…
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Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…
A: a) Given that: p= previous estimate = 32% =0.32 e= error= 3%=0.03 z=critical value for confidence…
Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…
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Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…
A: Given information: Margin of error(E)=0.03. Confidence level= 90%. α=1-0.90 =0.10 Zα2=Z0.102…
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- The Dean of the College of Business at State University hasinitiated a fund raising campaign. One of the selling pointsshe plans to use with potential donors is that increasing thecollege’s private endowment will improve its ranking amongbusiness schools as published in various news magazines.She would like to demonstrate that there is a relationshipbetween funding and the rankings. She has collected thefollowing data showing the private endowments ($ millions),and annual budgets ($ millions) from state and privatesources, for eight of State’s peer institutions plus State, andthe ranking of each school. Use Excel to develop a linear regression model for theamount of the private endowment and the ranking, and forecast a ranking for a private endowment of $70 mil-lion. Does there appear to be a strong relationship between the endowment and ranking?b. Using Excel, develop a multiple regression equation forall of these data including private endowment andannual budget, and forecast a…Please provide a critical path and network diagram for the question:Kentville, a community of 10,000 people, resides next to a krypton mine, and there is a concern that the emission from the krypton smelter have resulted in adverse effects. Specifically, Kryptonosis seems to have killed 12 of Kentville’s inhabitants last year. A neighboring community, Lanesburg, has 25,000 inhabitants and is far enough from the smelter to not be affected by the emission. In Lanesburg, only three people last year died of Kryptonosis. Given that the number of deaths in Kentville and their causes last year were: Heart attack=7 Accidents=4 Kryptonosis=12 Other=6 What is the risk of dying of Kryptonosis in Kentville relative to non-contaminated locality?What is the risk of dying of Kryptonosis in Kentville relative to deaths due to other causes? How many times the chance of dying of Kryptonosis compared to dying of accidents ? How many times the chance of dying of Kryptonosis compared to Other causes?
- Some research has shown that older parents are not as strict when disciplining their children compared to younger parents. Children of older parents are more likely to be in daycare and have greater independence than children of younger parents, whereas children of younger parents are more likely to be at home with parents and other siblings, and encounter more home discipline. A researcher observed the disciplinary habits of 456 families with at least one child, categorizing each as "high" or "low" in terms of disciplinary strictness. The families were also divided into older parents (those 29 years of age or younger) and older parents (30 years old and up). Are the following data consistent with the hypothesis that older parents are not as strict when disciplining their children? Calculate gamma and interpret it's direction and magnitude, and summarize your findings in a few sentences. Level of discipline Parental age 29 years or younger 30 years or…After a hard-fought football game, it was reported that, of the 11 startingplayers, 8 hurt a hip, 6 hurt an arm, 5 hurt a knee, 3 hurt both a hip and an arm,2 hurt both a hip and a knee, 1 hurt both an arm and a knee, and no one hurt allthree. Comment on the accuracy of the report.If two variables are associated, does that mean they are necessarily causally related and What info is additionally needed?
- As you read about each study, (a) classify the type of research that it reflects, and (b) identify the kinds of conclusions that might reasonably be drawn from the results. The director of computer technology in Emerson School District wants to gather information about the use of technology-based instruction in language arts and literature classes in the district's middle schools and high schools. For her study, the director identifies five of the top teachers in these content areas. She visits and observes each teacher's classes on three different days and subsequently interviews each teacher. Then she summarizes the ways that these teachers incorporate the use of technology into their lessons and their students' activities. The director also summarizes teachers' beliefs about the roles of technology in students' learning and motivation. (a) Classify the research as one of the following: Quantitative/descriptive Quantitative/correlational…The production department of Celltronics International wants to explore the relationship between the number of employees who assemble a subassembly and the number produced. As an experiment, two employees were assigned to assemble the subassemblies. They produced 15 during a one-hour period. Then four employees assembled them. They produced 25 during a one-hour period. The complete set of paired observations follows. Number ofAssemblers One-HourProduction (units) 2 15 4 25 1 10 5 40 3 30 The dependent variable is production; that is, it is assumed that different levels of production result from a different number of employees. Click here for the Excel Data File Draw a scatter diagram. On the graph below, use the point tool to plot the point corresponding to the first Number of Assemblers and her Production (No of Assemblers1). Repeat the process for the remainder of the sample (No of…How will marketers change their social media use in the near future? A survey by Social Media Examiner reported that 77% of B2B marketers (marketers that focus primarily on attracting businesses) plan to increase their use of LinkedIn, as compared to 54% of B2C marketers (marketers that primarily target consumers). The survey was based on 1,184 B2B marketers and 1,703 B2C marketers. The following table summarizes the results: Give an example of a simple Give an example of a joint What is the complement of a marketer who plans to increase use of LinkedIn? Why is a marketer who plans to increase use of LinkedIn and is a B2C marketer a joint event?
- The relationship between the independent variable (IV) and the dependent variable (DV) is likely to be mediated by a third variable (MV). With regard to the statement above, which of the following is most likely to be correct? A IV = Students’ performance (i.e., marks) in the formative assessment; DV = Students’ performance (i.e., marks) in the summative assessment, and MV = Students’ level of comfort with the venue of the assessments B IV = Students’ performance (i.e., marks) in the summative assessment; DV = Students’ performance (i.e., marks) in the formative assessment, and MV = Students’ level of preparation for the assessments. C IV = Students’ performance (i.e., marks) in the formative assessment; DV = Students’ performance (i.e., marks) in the summative assessment, and MV = Students’ level of preparation for the assessments D IV = Students’ performance (i.e., marks) in the summative assessment; DV = Students’ performance (i.e., marks) in the formative assessment,…How can we classify experimental designs? Explain one in eachcategory.The top 25 companies (by market capitalization) operating in the Washington, DC, areaalong with the year they were founded and the number of employees are given below.Make a stem-and-leaf display of each of these variables and write a short description ofyour findings.