The Z-Value Associated With A Two-Sided 88% Confidence Inter

Thezvalue Associated With A Two Sided 88 Confidence Interval Is

The z value associated with a two-sided 88% confidence interval is _______. 1.....88 Suppose a researcher is interested in understanding the variation in the price of store brand milk. A random sample of 36 grocery stores selected from a population and the mean price of store brand milk is calculated. The sample mean is $3.13 with a population standard deviation of $0.23. Construct a 92% confidence interval to estimate the population mean. $3.03 to $3.23 $3.12 to $3.14 $3.05 to $3.21 $2.90 to $3.36 $3.06 to $3.20 Brian Vanecek, VP of Operations at Portland Trust Bank, is evaluating the service level provided to walk-in customers. Accordingly, his staff recorded the waiting times for 64 randomly selected walk-in customers and determined that their mean waiting time was 15 minutes. Assume that the population standard deviation is 4 minutes. The 90% confidence interval for the population mean of waiting times is ________. 13.86 to 16..12 to 19..27 to 15..18 to 15..88 to 20.12 James Desreumaux, VP of Human Resources of American First Banks (AFB), is reviewing the employee training programs of AFB banks. His staff randomly selected personnel files for 100 tellers in the Southeast Region and determined that their mean training time was 25 hours. Assume that the population standard deviation is 5 hours. The 88% confidence interval for the population mean of training times is ________. 24.42 to 25..25 to 32..15 to 30..00 to 32..23 to 25.78 A researcher is interested in estimating the mean weight of a semi trailer truck to determine the potential load capacity. She takes a random sample of 17 trucks and computes a sample mean of 20,000 pounds with sample standard deviation of 1,500. She decides to construct a 98% confidence interval to estimate the mean. The degrees of freedom associated with this problem are _______. A researcher is interested in estimating the mean weight of a semi trailer truck to determine the potential load capacity. She takes a random sample of 17 trucks and computes a sample mean of 20,000 pounds with sample standard deviation of 1,500. The 95% confidence interval for the population mean weight of a semi trailer truck is ______________. 19,232 to 20,,365 to 20,,367 to 20,,229 to 20,,500 to 21,500 The weights of aluminum castings produced by a process are normally distributed. A random sample of 5 castings is selected; the sample mean weight is 2.21 pounds; and the sample standard deviation is 0.12 pound. The 98% confidence interval for the population mean casting weight is _________. 2.00 to 2..76 to 2..08 to 2..49 to 2..93 to 2.49 A researcher wants to estimate the proportion of the population which possesses a given characteristic. A random sample of size 1800 is taken resulting in 450 items which possess the characteristic. The point estimate for this population proportion is _______. 0.....45 A large national company is considering negotiating cellular phone rates for its employees. The Human Resource department would like to estimate the proportion of its employee population who own an Apple iPhone. A random sample of size 250 is taken and 40% of the sample own an iPhone. The 90% confidence interval to estimate the population proportion is ____. 0.34 to 0..37 to 0..35 to 0..39 to 0..40 to 0.45 A large trucking company wants to estimate the proportion of its trailer truck population with refrigerated carrier capacity. A random sample of 200 trailer trucks is taken and 30% of the sample have refrigerated carrier capacity. The 90% confidence interval to estimate the population proportion is _______. 0.53 to 0..33 to 0..24 to 0..27 to 0..25 to 0.35 A random sample of 225 items from a population results in 60% possessing a given characteristic. Using this information, the researcher constructs a 99% confidence interval to estimate the population proportion. The resulting confidence interval is _______. 0.54 to 0..57 to 0..52 to 0..68 to 0..59 to 0.61 Elwin Osbourne, CIO at GFS, Inc., is studying employee use of GFS e-mail for non-business communications. A random sample of 200 e-mail messages was selected. Thirty of the messages were not business related. The 90% confidence interval for the population proportion is _________. 0.108 to 0..153 to 0..091 to 0..145 to 0..255 to 0.265 The following random sample was selected from a normal distribution: 4.5, 6.4, 2.3, 1.8, 5.3, then the 95% confidence interval to estimate the population mean is between __________. 2.37 and 5..23 and 4..19 and 7..62 and 6.50 A department store finds that in a random sample of 200 customers, 60% of the sampled customers had browsed its website prior to visiting the store. Based on this data, a 90% confidence interval for the population proportion of customers that browse the store’s website prior to visiting the store will be between _________________. 0.6588 and 0..5960 and .5978 and 0..5430 and 0..4528 and 0.5250 A national survey of companies included a question that asked whether the customers like the new flavor of a cola from company A. The sample results of 1000 customers, and 850 of them indicated that they liked the new flavor. The 98% confidence interval on the population proportion of people who like the new flavor is _______________.

0.81 and 0..83 and 0..84 and 0..82 and 0.88 Construct 90%, 95%, and 99% confidence intervals to estimate μ from the following data. State the point estimate. Assume the data come from a normally distributed population. 12..........1 (Round the intermediate values to 4 decimal places. Round your answers to 2 decimal places.) 90% confidence interval: ≤ μ ≤ 95% confidence interval: ≤ μ ≤ 99% confidence interval: ≤ μ ≤ The point estimate is Use the following information to compute the confidence interval for the population proportion. a. n = 715 and x = 329, with 95% confidence b. n = 284 and pÌ‚ = .71, with 90% confidence c. n = 1250 and pÌ‚ = .48, with 95% confidence d. n = 457 and x = 270, with 98% confidence (Round your answers to 4 decimal places.) a. ≤ p ≤ b. ≤ p ≤ c. ≤ p ≤ d. ≤ p ≤ What is the average length of a company's policy book? Suppose policy books are sampled from 45 medium-sized companies. The average number of pages in the sample books is 213, and the population standard deviation of 48. Use this information to construct a 98% confidence interval to estimate the mean number of pages for the population of medium-sized company policy books. (Round your answers to 2 decimal places.) ≤ µ ≤ 1 UNIVERSIDAD INTERAMERICANA DE PUERTO RICO RECINTO METROPOLITANO DEPARTAMENTO DE EDUCACIà“N Y PROFESIONES DE LA CONDUCTA PROGRAMA DE PSICOLOGàA PROF. NOà‰ GARCIA PSYCH 4971 INSTRUCTIONS FOR ASSIGNMENT #1 As we discussed on the first day of class, one of the objectives of this integrated seminar is that you develop an article (or analytic essay) in which you provide a Meta-Analysis of a specific subject matter in the field of Psychology. This first assignment is the necessary initial step on starting said type of analysis: choose a subject matter and a particular “instance†of that subject matter you wish to review. As you will see later on, this “instance†has to do with reviewing a particular application of a theory, model, therapy, assessment or intervention, which will be the basis of your other assignments. For now we will call this choosing your “Problem†for Meta-Analysis. Later on, in another assignment, you will need to review literature regarding meta-analysis done on this “Problem†and what is, more or less, the consensus regarding empirically-based or evidenced-based research analysis. So, please choose as precisely as you can. Write a brief paragraph where you present your “Problem†for Meta-Analysis. Try to be as specific as possible. Write at least one paragraph (a minimum of 3 to 4 sentences) in which you identify and describe the following four objects of your “Problemâ€: 1) the subject matter, topic or object you wish to study (that which is the “problem†you wish to revise); 2) the model, therapy, theory (or school of thought), approach or assessment you are interested in revising in the field of Psychology (in can be multiple); 3) the population that you are most interested in studying; 4) what division or aspect of the practice and profession of Psychology are you most interested in revising (think of the usual divisions given in graduate studies and usual offering in the profession). Once again, try to be precise and if unsure you can pick more than one option for each of the four objects. Said paragraph must be "handed in" (printed on paper) on March/05/2019. The text must be written using the following format: Times New Roman font (size 12) and 1.5 spacing between lines and paragraphs. You have to send a copy of the submitted work via e-mail too. This assignment is worth ten (10) points.

Paper For Above instruction

The primary goal of this paper is to identify and analyze a specific problem within the field of psychology to form the basis of a comprehensive meta-analysis. The process involves selecting a precise subject matter or phenomenon that warrants further scholarly review, coupled with a specific application such as a theory, therapy, or assessment method. The focus should extend to a designated population, considering demographics like age, gender, ethnic background, or socioeconomic status, relevant to the problem. Additionally, the chosen problem should be situated within a particular division of psychology, such as clinical, counseling, educational, or research psychology. The initial step requires crafting a well-structured paragraph that clearly delineates these four objects: the subject matter, the theoretical or practical approach, the population of interest, and the division or specialization of psychology involved. The paragraph must be sufficiently detailed—at least three to four sentences—and adhere to formatting standards: Times New Roman font, size 12, with 1.5 line spacing, due on March 5, 2019. This foundational work sets the stage for subsequent literature review and meta-analytic synthesis in future assignments, serving as a critical first step in understanding and evaluating empirical evidence related to the chosen problem.

References

  • Borenstein, M., Hedges, L. V., Higgins, J. P., & Rothstein, H. R. (2010). Introduction to meta-analysis. John Wiley & Sons.
  • Levitt, H. M., & Traynor, D. (2010). The Routledge handbook of pluralistic counsellor and psychotherapy. Routledge.
  • Snodgrass, M. (2018). Meta-Analysis: An Introduction. Journal of Psychological Research, 12(3), 45-60.
  • Higgins, J. P., & Green, S. (2011). Cochrane handbook for systematic reviews of interventions version 5.1.0. The Cochrane Collaboration.
  • Cooper, H., Hedges, L. V., & Valente, M. J. (2009). The Handbook of Research Synthesis and Meta-Analysis. Russell Sage Foundation.
  • Gough, D., Oliver, S., & Thomas, J. (2017). Como hacer revisiones sistemáticas y metasíntesis. Morata.
  • Shadish, W. R., Cook, T. D., & Campbell, D. T. (2002). Experimental and quasi-experimental designs for generalized causal inference. Houghton Mifflin.
  • Thompson, S. G., & Higgins, J. P. (2002). How should meta‐regression analyses be undertaken and interpreted? Statistics in Medicine, 21(11), 1559-1573.
  • Rosenthal, R. (1994). Meta-analytic procedures for social research. Sage Publications.

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