Statistics Essay Example | Topics and Well Written Essays - 750 words - 2

Statistics - Essay Example 2. You wish to estimate the weight of the students at EKU. Using the question 2 data, calculate your sample mean to the nearest tenth of a pound. Use that estimate to construct 95% confidence interval for the true average if you know that the standard deviation of the population is 2.3 pounds. Construct 95% confidence interval if you do not know the true standard deviation. Comment on why those confidence intervals are different. Both confidence intervals are slightly different because one is computed based on known population standard deviation, ÏÆ' and z distribution and other is calculated based on sample standard deviation, s and t distribution. The t distribution has slightly broader tails then z distribution, therefore, the confidence interval is also slightly wider as compared to z distribution. 3. The average height in the United States for men is 69.3 inches. The standard deviation for the population of the men in the US is 3.4 inches. You measure a sample of people from Richmond and find that the average of these 16 men is 71.4 inches with a sample standard deviation of 4.8 inches. Assume all testing is for 95% confidence. 4. We wish to compare the weights of the people of Richmond, Kentucky with those of Lexington, Kentucky. We do not know the standard deviation for the population as a whole and we cannot assume that the unknown sigma is the same for each city. We take a sample from each city and the results are as follows All the three models are statistically significant and also, In model 3, individually, Parent’s income and Years of education significantly predicts person’s annual income . However, the adjusted R2 value for the model 3 is highest of all the regression models. Therefore, the best model is given by Adjusted R2 is a measure of Goodness-of-fit and penalizes the R2 for adding additional explanatory variables. The higher the value of adjusted R2,

Ventricular Septal Defect (VSD) Research Paper Example | Topics and Well Written Essays - 1000 words

Ventricular Septal Defect (VSD) - Research Paper Example Most common form of congenital heart diseases is defects in septation, atrial septal defects, ventricular septal defects, stenotic valvular lesions or coronary artery abnormalities (Schoen and Mitchell, 2009). Ventricular septal defects are the most common congenital defects occurring in the human heart.   Ã‚  Defect at the level of ventricle i.e. inter ventricular septum is called ventricular septal defect (VSD). It occurs in 1 of every 500 live births. The main pathology in a septal defect is that left ventricular pressure is higher than the right ventricular pressure resulting in blood flowing from left to right and pulmonary blood flow increases. Clinically ventricular septal defects can be divided into small, medium and large. A small VSD is asymptomatic, a medium VSD presents with fatigue, cardiac enlargement and audible apex beat, whereas, a large VSD presents with pulmonary hypertension (Kumar and Clark, 2009). Hemodynamics  is an important part of the cardiovascular system as it deals with the  forces  that pump the heart. Hemodynamics in an individual with congenital malformation is affected due to the defect. The factors affecting the hemodynamics of a ventricular septal defect are the size of the ventricular defect, pressure changes in right and left ventricular chambers and the pulmonary resistance. A ventricular septal defect may not be evident at the birth of a child because the pressure in the right and left ventricles is equal and there is no shunting. As the pressure between the two ventricles starts to change, shunting also correspond and the ventricular defect becomes clinically evident. These changes do not apply to a patient of Down syndrome in which pulmonary resistance changes do not lead to signs of VSD. In VSD the shunt volume is linked to the size of the defect in the ventricle and the pulmonary vascular resistance. If the ventricular defect is not accompanied by

Counterinsurgency Essay Example | Topics and Well Written Essays - 1250 words

Counterinsurgency - Essay Example Accordingly, the primary focus should be to improve the quality of the police and other security forces, strengthen government institutions, and separated the populace from the insurgents. Contemporary counterinsurgency methodologies introduced in the Philippines, Malaya, Algeria and Vietnam prove when the government accomplished these tasks, it defused the insurgency's political and ideological premise, discredited their cause, and created a political environment unsuitable for an insurgency to thrive. DISCUSSION: Intelligence reports show clashes between Taliban and coalition forces have increased significantly in 2008, highlighting the Taliban's resurgence and complicating NATO efforts to stabilize the country. Taliban, Hekmatyar, and Haqqani militants have expanded their influence in rural regions where NATO/ISAF and the Afghan government cannot provide sufficient security. Violent attacks have tripled in these areas - particularly against civilian non-combatants perceived to be in support of the government. Consequently, the U.S. planners must convince NATO and commanders to employ specific counterinsurgency approaches to reverse these trends. 1. Secure the Afghan-Pakistan border. ... Thus far, US/NATO strike operations along the border and inside Afghanistan have not curtailed militant force infiltrations and security forces have been unable to pursue retreating insurgents across the border. In order prevent these incursions, a more audacious containment strategy must be implemented. Measures include increasing security force levels in select border regions, formalizing intelligence cooperation activities with Pakistan, and erecting barriers along major infiltration corridors. First, NATO must expand the International Security Assistance Force (ISAF), Afghan National Police (ANP), and Afghan National Army (ANA) presence in the remote border regions where infiltrations and armed attacks most often occur. Diligent law enforcement activities should be the primary focus in populated areas and villages to disrupt support sanctuaries and networks logistics networks. ANA forces should occupy security checkpoints and border encampments to interdict hostile incursions. In the meantime Afghan and Pakistani officials formally demarcate the Durand Line by establishing a mutually recognized border, then erect a series of defensive fences along known infiltration corridors to deny militants access into Afghanistan. Technology based surveillance systems and interdiction platforms must be employed in tandem with physical structures. French counterinsurgents successfully employed similar fencing startegy in Algeria when they built the Mortice Line to contain the Front de Liberation Nationale (FLN) insurgents. Within a year of construction, the eight foot electrical fence proved to be a decisive counterinsurgency additive. The combination of static defenses and mobile border forces had killed over 6,000 would-be intruders and intercepted

Housewife to Career, Economic of Race and Gender Essay

Housewife to Career, Economic of Race and Gender - Essay Example argued that workforce discriminations are not owed to gender itself, but can be ascribed to the general truth that feminines are doomed to the accountabilities linked to bearing and raising children (Aguero and Marks 500). In fact, the plurality of business practitioners from varied organizations perceived that staffing women can improve the individual employee’s performance. They believed that a manifold labor force can furnish superior services unto the final consumers. Significantly, these practitioners believed that women can better fathom consumer’s necessities (Fleury 1999; Mueller 1998; Wentling and Palma-Rivas 2000, qtd. in Rahman, M. Hussain, and B. Hussain 85). Further, female corporate directors are proliferating leading to conclusive remarks that their cooperation in boards is manifested to be significant (Catalyst Group 2004; Rose 2007, qtd. in Srinidhi and Gul 1610). On the other side, literature has embedded a limited proof that racial discrimination, spe cifically skin color, has an impact on full-time employment contingency in a stationary environment (Akee and Yuksel 400). One significant discovery pertains to the decreasing number of females in the IT labor force owing to unconscious prejudices held by IT managers (Collett 33). However, the developments of women are hindered by three elements: (1) varieties of educational training, (2) feminines encounter career interruptions, and (3) women can work minor weekly hours (Galbraith 45). Additionally, a proliferating ratio of women is obtaining higher education since 1970 to 2008 (Sherrill 1). The prime factor under the category of interruptions is the childbearing; this triggers women to switch to part-time job after having children (â€Å"Why Women Suffered† 2). In fact, this is not considered a barrier since, nowadays, country like Germany has commenced to implement policy to alter family subsidies, having a double objective to augment fertility and to develop incentives for feminines to

Major problems and issues of an organization analyzed through a case Essay

Major problems and issues of an organization analyzed through a case study - Essay Example The two thus form a good case study through which the major problems that face organizations can be studied. An in-depth analysis of the companies will be undertaken through a brief background on the two in the movie rental market followed by diagnosis of their situations. A competitive and performance analysis will then be undertaken with recommendations on the way forward being generated. Netflix was started in 1997 by Reed Hastings and 10 years later had already taken over market leadership in movie rental services. Figures such as $1.2 billion in revenues, 100,000 movies in their catalogue and 7 million subscribers are quite enviable in the market. The main source of their dominance has been pioneering online movie renting through subscriptions (Thompson, Strickland and Gamble). Blockbuster on the other hand enjoyed early market domination since its inception in 1985 by David Cook (Blockbuster.com 2009). Its main source of advantage was availing movies at a much cheaper rental rates through negotiating deals with the major film studios thus reducing its rates to even just a tenth of competitors’. Blockbuster’s competitive advantage was nullified by Netflix’s focus on internet adoption. The two firms are still competing in a highly competitive market as stated by Netflix Inc. (6). Diagnosis of Netflix’s and Blockbuster’s Competitive Situations. Netflix is at the moment the market leader but is facing cutthroat competition from a resurgent Blockbuster which re-strategized and started slicing Netflix’s market share to an extent that forced the later to reduce its subscription fees leading to drop in its stock prices from panic. Other competition is also being felt from other albeit smaller rivals such as Redbox. Netflix (6) is also in recognition that the movie rental market is subject to drastic and rapid changes since

Different Reasons People Comunicate Essay Example for Free

Different Reasons People Comunicate Essay There are lots of reasons why people communicate at work. For example, to share ideas and thoughts, to express needs and feelings, to socialise, to gain and share information, to build relationship and to maintain relationship, to understand and to be understood and to receive instructions, to give encouragement and show others that we care. In order to work effectively with children and their families, it is important to have good relationship with a range of people. Those who have good communication skills are likely to have strong relationship with children, parents and other adults. Sometimes we need extra support and services to help people comunicate properly. Translation and interpreting services I know about few cases at school where teachers had to use translator services to facilitate written communication between parents whose English is an additional language. In addition, they may use interpreting services to facilitate spoken communication. Read more:  Identify five different reasons why people communicate  essay For sensitive matters should be used a professional interpreter as they have trained to translate the message but not misinterpret it. They have also been trained not to say their opinion or change the nature of what the other person is trying to say. Speech and language services – we may need to use these services to help us find ways of communicating with children and young people. They may provide suggestions and guidance as to how to use resources such as Picture Exchange Communication System (PECS) or training in visual systems such as Makaton. They showed up to be very efective with children with autism and down sindrome as many more. Advocacy services – a child or young person might be assigned an advocate whose task is to reflect their best interest. The use of advocates is needed for children or young people who are in local authority care or for children or young people with communication difficulties. Third sector organisations – for example, Royal National Institute for Deaf People (RNID) – we may use these services if we have children in the setting who are hearing impairment. These services provide training courses and consultancy on deafness and disability. They also offer communication services including sigh language, interpreters and provide services for deaf and hard of hearing people with additional needs. We need to find ways of communicating with children and build relationship with them so they find it easier to settle into a new environment. When parents find that their children are happy with us they will trust us and have total confidence in us. Comunication is a key in my job role as a Nanny so I can fullfill needs of children and than pass all details to parents, so they ll know, their child is happy and safe. I use to do it thru comunication books or during the handower at the end of the day. To work effectively we will need to gain and share information. This might be from basic information about how a child is feeling, what they are interested in or it might be information about their long-term health and welfare. In nurseries and schools for teams to work well together, it is important that relationships within them are strong and professional. The quality of relationships with colleagues can be disturb or threatened by the way they tallk to each other, react to their suggestions and the tone of the voice that they use. When relationships break down in professional teams, children, young people and their families are likely to receive a less effective service as this would afect them all. Friendly comunication in work place helps building loyalty and trust, they are aware of the needs of the children and job is done properly.

Accolade vs Sega Essay Example for Free

Accolade vs Sega Essay Accolade would definitely be wrong in every aspect of this story. Accolade’s lawyer’s argument that Sega’s security codes were an interface standard is also wrong in a lockean based economy. This is because interface standards are publicly owned by everybody and can be duplicated without permission. Nothing is publicly owned in a Locke based perspective. The utilitarian view would also favor Sega’s software code as being private property, but for different reasons. This view suggests if Sega didn’t have property rights to its genesis and affiliated profitability, then Sega would lose incentive to create new ideas beneficial to the marketplace. This theory of utility also suggests Accolade and Sega should both have taken a different approach to how they did business, or lack of business, with each other. Sega should have granted accessibility to its gaming console for a small fee. This would have made Sega and Accolade more profitable to society because Accolade’s games would benefit Sega’s industry. The Marxist theory would take Accolade’s side to this story. This theory would suggest the software that Accolade decoded belongs to the general public for their benefit to make a profit. Sega owns only the game console and not the software that is used to run it. Accolade’s lawyer’s argument that the software is an interface standard would stand lawful. I personally agree with the utility theory most because if there wasn’t any incentive for new ideas and technology, then there wouldn’t be any. People and companies put a lot of effort and resources into new ideas. A person would not put any time and effort into a good idea, especially if they cannot make any money from it. He or she could not make any money off of their idea because people would just steal their idea and profit from it themselves. If there were no copyrights or patents protecting ideas, we could all be living in an unindustrialized world. I believe Locke’s theory of private property is most appropriate for this case besides the Ninth Circuit Court of Appeals final decision that agreed with Accolade. Sega was using the lockean approach to private property with its security software. Accolade duplicated their software code without permission and infringed on Sega’s copyright. The story, in the end, basically agreed to Sega’s argument. 2. I believe Accolade Stole Sega’s property because American law has held to the theory that individuals have a right to do what they want with their property, and government has no right to interfere with an individual’s private property even for the good of society. Accolade would’ve benefited from using Sega’s product, but the law states it is Sega’s property, and they can do what they please with certain legal constraints. Sega did not grant Accolade a license to market games on their property. If Sega did grant them a license, then it would not be stealing. If I did not grant a person permission to use my car for their benefit and they drove off with it, I would call the police because someone stole my car. 3. I believe Accolade went too far in trying to reverse engineer Sega’s source code because Accolade already knew Sega didn’t want them marketing games on their new gaming console. If Sega wanted Accolade games on their console platform, wouldn’t Sega license them to do so? Sega specifically made that security code so game companies like Accolade would not benefit from Sega’s property. Sega wanted to be the sole maker of games for their console and they had the right to do that with their copyrighted property. With that said, I believe Accolade reverse engineered the software knowing it was morally wrong. I do not believe a company has the right to reverse engineer any product it wants. Taking an all ready thought of idea and creating a new product is different than copying another product verbatim. Reverse engineering affects the theory of utility. The incentive to come up with new ideas would be lost because there would be no reward for it. Let’s say Microsoft had the ability to create a new operating system and knew it could be reverse engineered the day they released it to the public. Would Microsoft put forth the effort, time, and resources to make this new product? I know I wouldn’t because Microsoft’s competitors could produce the same product with less overhead. This would be giving Microsoft’s competitors an advantage because they could sell the same product for less money. This would potentially put Microsoft out of business. Economies inevitably couldn’t evolve to serve societies better. Works Cited Velasquez, Manuel G. Business Ethics: Concepts and Cases. 7th ed. Upper Saddle River, NJ: Pearson, 2012. Print.