Entries by Student

write my assignment 30054

Please solve the following questions attached: 

ignore the following*

Econ 2500 Section D 3.0 – Fall 2016Assignment 2(Due Date: November 24, 2015)Question 1: Let X be a continuous random variable with probability density functionf(x) =cx 0 2|1 ≤ X ≤ 3).Question 2: Statistics Canada reported that 13% of Canadians are left-handed. 12Canadians are randomly selected.a. Let X be the number of right-handed Canadians being selected. Find the probabilitydistribution of X.b. What is the probability that majority of the selected Candians are right-handed.c. What is the mean and standard deviation of X.Question 3: The weight of potato chips in a medium size bag is stated to be 300 g.The amount that the packaging machine puts in these bags is believed to have be normallydistributed with mean 306 g and standard deviation of 3.6 g.a. What proportion of all bags sold are underweight?b. What is the probability that the mean weight of the three bags is below the statedamount?c. What is the probability that the mean weight per bag of a 24-bag case of potato chipsis below 300 g?Question 4: An automatic character recognition device can successfully read about 85%of hand-written credit card application.a. Three credits card applications are randomly selected. What is the probability thatthe device successfully read at least two of them?1b. Three hundred credits card applications are randomly selected. What is the probabilitythat the device successfully read at least two hundred of them? For this question, firstgiven the exact expression of the required probability. Then approximate it based onthe method you have learned in class (or in text).c. What theory did you apply to obtain the answer in part (b)? Explain by the theory isapplicable in this case.Question 5: Clearly define the variables and parameters and set up the hypotheses foreach part.a. In 2010, Bell Canada took an average 0.4 hours to respond to trouble calls. Bell Canadaobtained the data for 2014. Is there any evidence that show a change in the averageresponse time?b. US Census Bureau data show that the mean household income in the area served bya shopping mall is $42800 per year. A market research firm questions shoppers at themall to find out whether the mean household income of mall shoppers is higher thanthat of the general population.c. The average square footage of one-bedroom apartments in a new student-housing developmentis advertised to be 880 square feet. A student group thinks that the apartmentsare smaller than advertised. They hire an engineer to measure a sample of apartmentsto test their suspicion.d. To study the sleeping pattern of adolescents, a sample of 50 adolecscents, all free ofsevere illness, are randomly selected. The research believe that people with low sleepefficiency had an average of systolic blood pressure to be higher than 132 mm Hg.Question 6: A nutrition lab tested the mean sodium content of 100 hot dogs. The labreported that the mean sodium content of their sample is 322 mg with a standard deviationof 2.5 mg.a. One of the aims is to report a 95% confidence interval for the mean sodium content ofhot dogs. Is it necessary to assume the distribution of sodium content of hot dogs isnormally distributed? Why?b. Based on your result in part (a), obtain the 95% confidence interval for the meansodium content of hot dogs.c. Based on the result in part (b), is there any evidence that the mean sodium content isdifferent from the stated 325 mg on the package?d. A dietitian is interested to know if the result suggested that the mean sodium contentof hot dogs is significantly lower than the stated 325 mg on the package. What can youtell from the lab results? (You answer has to be justified based on statistics concepts.)2Question 7: Consumer Reports tested 14 brands of vanilla yogourt and found the followingnumbers of calories per serving:160 200 220 230 120 180 140130 170 190 80 120 100 170a. State all the necessary assumptions and report a 90% confidence interval for the meancalorie content of vanilla yogourt.b. A diet guide claims that you will get an average of 120 calories from a serving of vanillayogourt. Based on the given data, is there evidence that the mean calorie content isdifferent from the claim of the diet guide?Question 8: A medical researcher believes the body temperature of adults is normallydistributed with a standard deviation of 0.4oC.a. What sample size is required such that a 99% confidence interval of mean body temperatureof adults has width at most 0.06oC?b. Based on the result in part (a), is it really necessary to assume the body temperatureof adults is normally distributed? Why?3

 

"Not answered?"


Get the Answer

write my assignment 30731

Hi, i need the table i uploaded to be filled

Health Promotion Program, Part B2: Evidence-based Literature SearchYou will be expected to search for the highest level of evidence for your health promotion project. Please listen to the lecture on searching the evidence, use the services of the research librarian, and pull from the knowledge gained in NUR 39000 Nursing Research to complete this assignment. The Purdue Owl website is a great resource for you when citing your references in APA style.  

Self- Assessment of Learning Styles.pdf          .JBI-Levels-of-Evidence(1).pdf

Library Resources: The reference librarian for the School of Nursing has created a very helpful website of library resources for this course. Click on the link below to accept this website:NUR 39400 Library Resource Guide

 https://mycourses.purdue.edu/bbcswebdav/pid-12421733-dt-content-rid-93949047_1/courses/pnw_45033.201920/JBI-Levels-of-Evidence%281%29.pdf

New JBI Levels of Evidence

Developed by the Joanna Briggs Institute Levels of Evidence and Grades of Recommendation Working Party October 2013

PLEASE NOTE: These levels are intended to be used alongside the supporting document outlining their use. Using Levels of Evidence does not preclude the need for careful reading, critical appraisal and clinical reasoning when applying evidence.

LEVELS OF EVIDENCE FOR EFFECTIVENESS

Level 1 – Experimental Designs

Level 1.a – Systematic review of Randomized Controlled Trials (RCTs)

Level 1.b – Systematic review of RCTs and other study designs

Level 1.c – RCT

Level 1.d – Pseudo-RCTs

Level 2 – Quasi-experimental Designs

Level 2.a – Systematic review of quasi-experimental studies

Level 2.b – Systematic review of quasi-experimental and other lower study designs

Level 2.c – Quasi-experimental prospectively controlled study

Level 2.d – Pre-test – post-test or historic/retrospective control group study

Level 3 – Observational – Analytic Designs

Level 3.a – Systematic review of comparable cohort studies

Level 3.b – Systematic review of comparable cohort and other lower study designs

Level 3.c – Cohort study with control group

Level 3.d – Case – controlled study

Level 3.e – Observational study without a control group

Page | 2

Level 4 – Observational –Descriptive Studies

Level 4.a – Systematic review of descriptive studies

Level 4.b – Cross-sectional study

Level 4.c – Case series

Level 4.d – Case study

Level 5 – Expert Opinion and Bench Research

Level 5.a – Systematic review of expert opinion

Level 5.b – Expert consensus

Level 5.c – Bench research/ single expert opinion

Page | 3

LEVELS OF EVIDENCE FOR DIAGNOSIS

Level 1 – Studies of Test Accuracy among consecutive patients

Level 1.a – Systematic review of studies of test accuracy among consecutive patients

Level 1.b – Study of test accuracy among consecutive patients

Level 2 – Studies of Test Accuracy among non-consecutive patients

Level 2.a – Systematic review of studies of test accuracy among non-consecutive patients

Level 2.b – Study of test accuracy among non-consecutive patients

Level 3 – Diagnostic Case control studies

Level 3.a – Systematic review of diagnostic case control studies

Level 3.b – Diagnostic case-control study

Level 4 – Diagnostic yield studies

Level 4.a – Systematic review of diagnostic yield studies

Level 4.b – Individual diagnostic yield study

Level 5 – Expert Opinion and Bench Research

Level 5.a – Systematic review of expert opinion

Level 5.b – Expert consensus

Level 5.c – Bench research/ single expert opinion

Page | 4

LEVELS OF EVIDENCE FOR PROGNOSIS

Level 1 – Inception Cohort Studies

Level 1.a – Systematic review of inception cohort studies

Level 1.b – Inception cohort study

Level 2 – Studies of All or none

Level 2.a – Systematic review of all or none studies

Level 2.b – All or none studies

Level 3 – Cohort studies

Level 3.a – Systematic review of cohort studies (or control arm of RCT)

Level 3.b – Cohort study (or control arm of RCT)

Level 4 – Case series/Case Controlled/ Historically Controlled studies

Level 4.a – Systematic review of Case series/Case Controlled/ Historically Controlled studies

Level 4.b – Individual Case series/Case Controlled/ Historically Controlled study

Level 5 – Expert Opinion and Bench Research

Level 5.a – Systematic review of expert opinion

Level 5.b – Expert consensus

Level 5.c – Bench research/ single expert opinion

Page | 5

LEVELS OF EVIDENCE FOR ECONOMIC EVALUATIONS

Levels

1. Decision model with assumptions and variables informed by systematic review and tailored to fit the decision making context.

2. Systematic review of economic evaluations conducted in a setting similar to the decision makers.

3. Synthesis/review of economic evaluations undertaken in a setting similar to that in which the decision is to be made and which are of high quality (comprehensive and credible measurement of costs and health outcomes, sufficient time period covered, discounting, and sensitivity testing).

4. Economic evaluation of high quality (comprehensive and credible measurement of costs and health outcomes, sufficient time period covered, discounting and sensitivity testing) and conducted in setting similar to the decision making context.

5. Synthesis / review of economic evaluations of moderate and/or poor quality (insufficient coverage of costs and health effects, no discounting, no sensitivity testing, time period covered insufficient).

6. Single economic evaluation of moderate or poor quality (see directly above level 5 description of studies). 7. Expert opinion on incremental cost effectives of intervention and comparator.

Page | 6

LEVELS OF EVIDENCE FOR MEANINGFULNESS

1. Qualitative or mixed-methods systematic review

2. Qualitative or mixed-methods synthesis

3. Single qualitative study

4. Systematic review of expert opinion

5. Expert opinion

 

"Not answered?"


Get the Answer

write my assignment 24077

You will prepare and submit a term paper on Design Aspects of Riblets for Fluid Drag Reduction: A Review. Your paper should be a minimum of 3500 words in length. Most of the fluid dynamic applications rely on the use of energy to either facilitate movement of solid or solid bodies through fluids as well as maintaining fluid motion over the surface of a solid body (Rohr, Anderson, and Reidy, 1989). The two cases require energy in overcoming the available drag force (Walsh, 1990). Due to the increased demand of energy to facilitate the success of various dynamic applications, the world is witnessing increased interest of promoting energy conservation activities, with researchers being on the front line to identify alternative means of reducing consumption (Breus et al, 1993). As a result, the world is experiencing increased research activities to determine and recommend appropriate ways of reducing drag effects in transport pipelines, vehicles, and airplanes as well as in other industrial applications (Hage, Bechert&Bruse, 2000, Walsh, 1990).

The discovery of the phenomena to reduce drag force boosted the effort among researchers involved in actualizing its effects (Virk, 1971). Many researchers have been trying to come up with appropriate measures that will enable in reducing the impacts of drag force on both the economy and the environment (Alfredsson and Johansson,1989). Many researchers have presented their explanation concerning the effects and cause of drag force between a fluid and solid boundary (El-Samni, Chun, and Yoon, 2007). Findings by many researchers associate drag force with friction losses taking place as a result of fluid flow in a thin layer that is adjacent to a given solid boundary (Itoh, 2006, Walsh, M. J. &Lindemann, 1984). Any flow taking place outside the layer in consideration is considered frictionless since the velocity around it is only affected by boundary shear (Bushnell, 2003). Drag is generated by the boundary layer near the wall due to&nbsp.the viscous interaction that exists between the fluid and the surface (Lumley, 1972).&nbsp.

 

"Not answered?"


Get the Answer

write my assignment 28907

Create a 3 page essay paper that discusses Major Problems in Dealing with Health in Rural India and Advise on how to Address the Problems.

Even though the government has introduced various health policies for example the 2005 National Rural Health Mission (NRHM) Policy to the Indias in rural areas as a way of providing quality and affordable health care, low consideration has been given to the system of medicine in rural areas (Kaveri 47). For example, modern medical training, an initiative that is funded by local people has failed to meet the needs of rural dwellers that form the biggest percentage of Indian residents. This is based on lack of proper skills by practitioners to provide adequate health care. For example, 79 % of the practitioners in rural areas who practice allopathic medicine have no appropriate training (Ashok et al 24). Poor accessibility of health care One of the major causes of problem when dealing with health care in Tamil Nadu and other regions is lack of adequate access to health care (Ashok et al 13).This is based on the fact that most of the health care centers are aimed at benefiting the urban dwellers and the upper class (World Health Organization 25). While the health care in urban areas is been provided by properly equipped dispensaries and hospital that are managed by corporate and other organizations, health services in rural areas especially those related to family planning and immunization are addressed by rural health centers that have inadequate facilities leading to high rate of child. Misallocation of financial resources and inadequate public expenditure on health Only 0.9% of the gross domestic product (GDP) is allocated to public health which is not adequate to meet the health needs of rural people Considering that more than 80% of the Indians reside in rural areas, and only 10% of the health budget is directed to rural areas, it is clear that the health problems are real challenges in rural areas (World Health Organization 25). Commercialization of health services Due to the failure of the government to provide adequate drugs in rural hospitals, rural residents have continued to seek the services of the private sector. This is despite the contributions of the public towards national budget through income and value added taxes. Based on the high level of poverty by rural residents, it has become a challenge to acquire drugs from the private health care providers. In the same way, drugs that are not recommended by World Health Organization (WHO) have dominated Indian market as dealers focus at maximizing their revenue (World Health Organization 17). Important advice to solving these problems In order to ensure the health of rural people residing in Tamil Nadu and other states is enhanced, it is vital for the government to provide cheap cell phones that are connected to the internet. In this way, communication between health providers will be improved. In addition, it would help in bringing about accessibility of the hospitals by the rural residents . Another way of enhancing accessibility of health care is incresing the number of mobile vans that are already been in use in India. Such vans will also be essential in entering areas where public health services have not reached. It is also important to ensure that states appropriately uses the budgetary allocation of the finacial resources allocated by NRHM. For example, in 2008-09 fiscal year, out of 33.5% of the resources allocated to Uttar Pradesh, 41.7% was unspent (Kaveri, 36). The lack of spending of the

 

"Not answered?"


Get the Answer