Statistics for Business Essays

Statistics for Business Essays Statistics for Business Essay Statistics for Business Essay Does asymptotic mean that the normal curve gets closer and closer to the X-axis but never actually touches it? Yes, asymptotic means that the curve of a line will approach 0 (the x-axis), but it will not touch 0 and instead will extend to infinity. In this class, this applies to the normal continuous distribution and is one of the 4 key characteristics of a normal continuous distribution that our text book discusses. This means that the curve of the line will extend infinitely in both the negative and positive direction in exact mirror image patterns on either side of the mean. For a normal probability distribution, is about 95 percent of the area under normal curve within plus and minus two standard deviations of the mean and practically all (99. 73 percent) of the area under the normal curve is within three standard deviations of the mean? Yes. According to the Empirical Rule: -68% of the area under the curve is within +/- 1 standard deviation of the mean -95% of the area under the curve is within +/- 2 standard deviations of the mean -Virtually all, 99. % of the area under the curve is within +/- 3 standard deviations of the mean Is a z-score the distance between a selected value (X) and the population mean (u) divided by the population standard deviation(s)? Yes. We use z-scores to change normal probability distributions into standard normal probability distributions, which are unique because they have a mean of 0 and standard deviation of 1. To convert to a standard normal probability distribution we must find the z-scores for each observation. These are found by subtracting the mean value from the selected value and dividing by the standard deviation. The Normal Probability Distribution Find an example of application of probability theory in your workplace or business. Show that the reasons that your workplace uses probability analysis, such as probability of risk calculations or percent defects or percent for pass or fail of a product, etc. In my company, I do groundwater sampling for remediation projects. When we are finished, we send our samples to a laboratory via FedEx or UPS. The laboratory reports that approximately 2 bottles are broken in every cooler shipped, regardless of how well they are packed. To perform sample analysis, the laboratory needs 1-500 ml bottle of groundwater, and 1-50ml vial of water to perform all of the tests for each well. When we take samples we collect 3-500ml bottles and 3-50 ml vials of groundwater per well because we know that on average two bottles will break per shipment. The bottles that break could be from 2 different wells, or 2 different sized bottles, or they could be two identical sized bottles from the same well. By collecting extra samples, we ensure that we are sending the lab enough samples to accurately perform analysis, and we are ensuring that we don’t have to go back into the field and spend thousands of extra dollars to re-collect samples. What are some of characteristics of a Normal Probability Distribution? According to our text (pg 223), all normal probability distributions have these characteristics: 1. The are bell-shaped and the mean, median, and mode are equal and located in the centre of the distribution. 2. The total area under the curve = 1. 00 with ? f this located to the right of the peak(mean) and ? located to the left of the peak (mean). 3. The distribution curve is symmetrical around the peak (mean) and therefore there are two identical halves of the curve, centred around the mean. 4. The curve approaches the x-axis, but never actually touches it. (i. e. , it is asymptotic) 5. The location is determined by the mean and the dispersion is determined by the standard deviation. Non-stop Airlines determined that the mean number of passengers per flight is 152 with a standard deviation of ten passengers. Practically do all flights have between 142 and 162 passengers? According to the Empirical rule, 142 -162 passengers would fall within 1 standard deviation of the mean (i. e. , 68% of the area under the curve) If we wanted to know how many passengers were on practically/virtually all flights, we would have to apply the Empirical Rule for 3 standard deviations from the mean. This would account for 99. 7% of the area under the curve. According to this theory, virtually all flights would have between 122 – 182 passengers. Is the total area within any continuous probability distribution equal to 1. 00? Yes. If we are a talking about uniform probability distributions (rectangles), the area must equal 1. We can find this using Area = basexheight or (b-a/1) x (1/b-a). Using this equation, both fractions will ‘cancel out’ to give you a value of 1. 00. If we are talking about normal probability distributions, they are bell-shaped with a single peak at the distribution centre and therefore, they are symmetrical about the mean. This means that the two halves of the curve are identical and they both have values of 0. 5 (0. 5 to the left of the mean and 0. 5 to the right of the mean). Is the uniform probability distributions standard deviation proportional to the distributions range? Yes. The equation for standard deviation for a uniform probability distribution is = SQRT [ (b-a)^2/12]. A range is the difference between the max and min values for a distribution (b-a). Therefore, the range of the distribution directly impacts the standard deviation as it is a part of the equation. The larger the range, the larger the standard deviation of a uniform distribution and the smaller the range, the smaller the standard deviation of a uniform distribution. About what percent of the area under the normal curve is within one standard deviation of the mean? According to the Empirical Rule, approximately 68% of the area under the curve, for a normal distribution, is within +/- one standard deviation of the mean. (u +/- 1sd)

Learn About Homonyms and See Examples

Learn About Homonyms and See Examples Homonyms are two or more words that have the same sound or spelling but differ in meaning. Adjectives: homonymic and homonymous. Generally, the term homonym refers both to homophones (words that are pronounced the same but have different meanings, such as pair and pear) and to homographs (words that are spelled the same but have different meanings, such as bow your head and tied in a bow). Note that some dictionaries and textbooks define and distinguish these three terms in different ways. Some equate homonyms only with homophones (words that sound the same). Others equate homonymns only with homographs (words that look the same). See the observations below by Tom McArthur and David Rothwell. Also see Homophones and Homographs: An American Dictionary, 4th ed., by James B. Hobbs (McFarland Company, 2006). Pronunciation HOM-i-nims Etymology From the Greek, same name Examples and Observations Mine is a long and sad tale! said the Mouse, turning to Alice, and sighing.It is a long tail, certainly, said Alice, looking down with wonder at the Mouses tail; but why do you call it sad?(Lewis Carroll, Alices Adventures in Wonderland)Your children need your presence more than your presents.(Jesse Jackson)I enjoy bass fishing and playing the bass guitar.The groups lead singer carried a lead pipe for protection.His death, which happend in his berth,At forty-odd befell:They went and told the sexton, andThe sexton tolld the bell.(Thomas Hood, Faithless Sally Brown)Attend your Church, the parson cries:To church each fair one goes;The old go there to close their eyes,The young to eye their clothes.Mae Maebe Funke: Do you guys know where I could get one of those gold T-shaped pendants?Michael: Thats a cross.Mae Maebe Funke: Across from where?(Alia Shawkat and Jason Bateman in Arrested Development) Homonymy A case of homonymy is one of an ambiguous word whose different senses are far apart from each other and not obviously related to each other in any way with respect to a native speakers intuition. Cases of homonymy seem very definitely to be matters of mere accident or coincidence. (James R. Hurford, Brendan Heasley, and Michael B. Smith, Semantics: A Coursebook, 2nd ed. Cambridge University Press, 2007) Three Kinds of Homonyms There are three kinds [of homonyms]: those that sound and look alike (bank a slope, bank a place for money, and bank a bench or row of switches); homophones, that sound alike but do not look alike (coarse, course); and homographs, that look alike but do not sound alike (the verb lead, the metal lead). . . . There are over 3,000 homographs in the Concise Oxford Dictionary (8th edition, 1990). (Tom McArthur, Oxford Companion to the English Language. Oxford University Press, 1992) Homographs and Homophones The reason that there is confusion and a lack of clarity over homonym is that it is closely related to two other words, homograph and homophone. I shall, therefore, define these words first. It is possible for a word to be a homograph or a homophone. However, whatever the word may be, it is also, by definition, a homonym. In other words, homonym is a conceptual word that embraces both homographs and homophones. . . . [H]omonym is just the collective noun for homograph and homophone. (David Rothwell, Dictionary of Homonyms. Wordsworth, 2007) A homograph is a word that is spelled identically to another word but none the less has a different meaning and probably a different origin. You will doubtless be annoyed if you tear your trousers while climbing over a fence. Indeed, you may be so upset that you shed a tear. As you can see, tear and tear are spelled identically, but they are pronounced differently and have entirely different meanings. They are good examples of a homograph. Many homographs are not even pronounced differently. Thus the word hide sounds exactly the same whether you are talking about the skin of an animal, a measure of land or the verb meaning to conceal or keep out of sight. A homophone is a word that sounds exactly like another word  but has a different meaning and a different spelling. If you stand on the stair and stare at the picture, you have a good example of a couple of homophones. . . . The Lighter Side of Homonyms Secret-keeping is a complicated endeavor. One has to be concerned not only about what one says, but about facial expressions, autonomic reflexes. When I try to deceive, I myself have more nervous tics than a Lyme disease research facility. [pause] Its a joke. It relies on the homonymic relationship between tick, the blood-sucking arachnid, and tic, the involuntary muscular contraction. I made it up myself. (Jim Parsons as Sheldon Cooper in The Bad Fish Paradigm. The Big Bang Theory, 2008) Test your knowledge by taking this  Commonly Confused Words Quiz

Personal Experience Assignment Example | Topics and Well Written Essays - 500 words

Personal Experience - Assignment Example During the winter holidays, I had to seek assistance from friend doctor. Luckily enough, addiction to it had not taken deep root enough. The doctor proposed one month intensive medication care and with regular visiting. Change of lifestyle was also important when one is in the process of quitting. I had to avoid places where people smoked a lot until the day the doctor confirmed to me that I was strong enough to go to such places. Back at home, it was not easy. Parents had to put me under curfew. I was expected to stay at home the extent to which I used to interact with friends reduced. Having no place to go, I spent a lot of time home just watching movies and series. Smoking eats on one’s health, as a result, I was put under heavy diet so as to regain weight. Personally, I embarked on activities like washing dishes and update my blog on the consequences of smoking. The point is I had to do everything to change. Daily activities, like running up and down the stairs really help ed in the process of quitting. I am now back to school and doing well in class. It took me two weeks of intensive medication and daily exercise to stop smoking and three week for the side effects to subdue. Teacher and parents became concerned about the performance and questioned me. However, being cleaver, I would hide everything from them. This didn’t last for long; I had to look for a permanent solution that would enable me quickly stops smoking. A friend advised me to buy Bupropion, a drug believed to help smokers quit smoking.

Internal Analysis as a part of strategic planning process of WRSX Assignment

Internal Analysis as a part of strategic planning process of WRSX - Assignment Example Strategic planning is a means of planning at present about the desired future of the company using the knowledge and information about the company today (Special Libraries Association, 2001, p.1). WRSX is a global advertising company, which has been successfully delivering good fortunes in the advertising industry for the past 8 years. Until recently, for about a year, the company had been underperforming below what it is capable of. Failure in strategic management is the primary reason behind this situation. A well-defined, effective strategic plan is the key to success of the company in the near future. This study shows the benefits involved in including internal analysis as a part of the strategic management process and how it can bring WRSX in the right track towards its sustainability and success, in this changing world. Typically, a strategic management process consists of four broad areas. They are: Environmental Scanning, Strategy Formulation, Evaluation and Control (Akhafaji , 2003, p. 6). All these four components are inter-related to each other. Effective strategic planning helps the company to remain focused and achieve the future goals and objectives successfully. Basically a strategic planning process has four main purposes.... The Resource Based View (RBV) approach to strategy management is a tool to identify the potential resources of a firm which can be utilized to achieve competitive advantage and can result in strong performance of the company in future (Barney, J & Penrose, E, 2011). Short-term competitive advantage created from use of available resources of WRSX productively can lead WRSX to sustaining that competitive advantage for a long term if these resources are not imitable or substitutable easily. WRSX needs to develop its resources into core competencies to create competitive advantage. For this VRIN model can be utilized. This model includes the following five attributes of resources: 1) Valuable, meaning the resources must be valuable to the company in creating the strategy, 2) Rare, meaning the resources must be scarcely available to others, in creating value to the company, 3) In-imitable, meaning it cannot be easily imitated, and 4) Non-substitutable, meaning that availability of substit utes are rare (Rothaermel, 2008, p.208-209). WRSX has always been known for creativity and innovation. These are the two key attributes which is very much valuable to the company. These can neither be imitated nor substituted because creations and innovations of WRSX are its own and developed by WRSX only. WRSX enjoys a core competency in developing creativity and is an absolute necessity for an advertising agency like WRSX to satisfy its customer requirements. This helps WRSX attaining competitive advantage over its rivals and must build on it and work for more and more creations and innovations and encourage it at all levels of the company. Development of strategic capabilities can also be a key to the success WRSX. The six

Evolution of British Policy in the Colonies: 1750 to 1776 Essay

Evolution of British Policy in the Colonies: 1750 to 1776 The relations between England and the British North American colonies could always be considered precarious. Prior to 1750 British essentially followed a policy of benign neglect and political autonomy in the American colonies. (Davidson p.97) The colonies were for the most part content with benign neglect policy, relishing in a â€Å"greater equality and representative government†(Davidson p.95) within the colonies. Competition among European Imperial nations began to effect British policy toward North America colonies causing rapid shifts from 1750 to 1776. During this period, the British Empire made a series of policy decision that sealed the fate of the British North American colonies and lead to the American Revolution. In 1745, the French, Spanish and British Empires began competing over international trade networks and natural resources. Subsequently, each empire began maneuvers to maintain and expand possession of their territory in North America. In 1750, England and France each concluded that â€Å"Ohio country† the land west of the Appalachians was vital to their interests. (Davidson p.102) This battle of over Ohio country led the British and the French into the Seven Years’ War. In the early years of the Seven Year’s war, the British struggled, suffering a significant defeat at Fort Duquesne and surrendering at Fort Necessity. (Davidson p.102-3) Their defeats were largely due to incompetent leadership and the British’s policy decisions. For example, General Braddock alienated the Native Indians, which then aligned with and fought with the French. The North American colonial troops despised commanding officer General Campbell, the Earl of Loudon. Many men we... ...ed Independence thus entering the America revolution. The British polices and leaders continually undermined the citizens of the colonies. It was the British elitist views that continually caused poor policy and leadership decisions. Instead of using a diplomatic approach Britain continued to try to assert dominance over the colonies. These same issues and arrogant attitudes would eventually cost them the war. In the end the battle was not over British policy, it was a battle between a monarchy and a democracy. It was not possible for the two sides to reconciled differing political ideologies. The British were naà ¯ve in thinking they could rule America like a monarch. After all most British Americans left â€Å"mother England† in search of a better life, many in search of liberties not granted at home. Maybe it was always America’s destiny to be independent.

Neighborhoods and Deliquence Essay

How does one know for sure whether or not their family is being brought up in the right type of environment? An abundance of people raise their children in neighborhoods where the youth may be pressured and lured into situations that can generally lead to only problems and complications. There is not necessarily one right answer to prevent this from happening. It is not as simple as keeping adolescents from getting into bad situations by locking them up a closet their entire lives; however, there can be other ways to approach and deal with these ypes of issues involving Juvenile delinquency. Nowadays, the area in which a person lives and raises their families, may have a significant amount to do with the circumstances in which their kids get involved with gang affiliation, drugs and committing violent acts. To begin, there are numerous places where which gangs or gang affiliation is present, yet there are certain areas in which gangs are more apparent. For example, according to an article from SF gate, â€Å"A 1 5-year-old boy has been charged with murder in the slaying of another teenager near a troubled Oakland apartment omplex, authorities said Tuesday†¦ The slaying happened in a neighborhood where two buildings had recently been condemned because of code violations and fears of imminent gang activity, and police suspect that Erik and his killer were members of rival gangs. â€Å"(SF Gate). Henry Lee who wrote this article gives a perfect example of how many young teens are getting into gangs. This shooting happened in Oakland were a lot of violence goes on, because low income families live in the bad neighborhoods their children grow up with many bad influences around them. Another example is, in reference to this article from SF Gate, â€Å"The action came a week atter police noticed that nearby buildings were covered with gang graffiti a gang members had punched holes through the walls of the complex as an escape route, apparently girding for a possible attack, authorities said. Rival gang members then sprayed over the graffiti, police said. â€Å"(SF Gate). This article is mainly about how a young child gunned down rival gang members, but analyzing this more thoroughly it states how children are getting into gangs at a young age because of the neighborhoods they are growing in. Young children are getting into gangs and committing violent acts because of the neighborhood they are growing up in. Furthermore, drugs are another influence that children of a young age are getting into because of the neighborhoods they are growing up in. For example, from an article of World Youth Report, â€Å"The use of alcohol and illegal drugs by Juveniles is one cause of delinquency, as they are often compelled to commit crimes (usually theft) to obtain the cash needed to support their substance use. Drugs play a huge role in when it comes to Juvenile delinquency because young children get into them. The reason for that is because of the neighborhood the child grows up to. A good comparison is a child growing up in Oakland compared to a child growing up in Marin. In Marin one doesn’t see children drug dealing at the corner compared to Oakland were things like that do happen and children are involved. Another example from the article of World Youth Report, â€Å"Many young people retreat into the confines of their own groups and resort to drug use for psychological or emotional escape. Drugs can also be used as a getaway drug because of problems they might be having ut it wouldn’t be a problem if the children were being raised in the right type of environment. Drugs have a big influence on children when growing up in a bad neighborhood. Finally, there is the issue of violence amongst youth. Violence is also a huge issue around the world, but is more generally seen in conflicted neighborhoods. An example from an article of World Youth Report, â€Å"Quite often, advantage is being taken of illegal opportunities as young people commit various offences, become addicted to drugs, and use violence against their peers. † Violent acts that children do at a young ge because of the neighborhoods they grow up in. Many kids do more violent acts because they are in gangs and required to or because of anger. Children doing violent acts do them because of the life style they grow up in. Back to the article form SF gate where the fifth teen year old teen shot and killed a rival gang member. Being that young and already murdering someone is a problem in our society because kids that age should be in a gang or exposed to all that violence. Many gang members recruit small children so they can get them to commit violent acts and they won’t be trailed as adults. Another example from the article of World Youth Report, â€Å"Some groups and subcultures tend to use violence as a means of solving interpersonal conflicts, and the atmosphere thus created is an important mediating factor contributing to delinquent or criminal behavior. Violence can also be interpret as solving problems with their fists, these ways of solutions are used by many kids and they get it from the neighborhood they are growing up in. Violence is a major influence on children because of the neighborhood they are growing up in. To reiterate, there are many reasons tor why children can be driven to Juvenile elinquencies but the main reason is neighborhoods because of gangs, drugs and violence. Children when growing up in bad neighborhoods are exposed to many things because gangs, drugs and violence are in bad neighborhoods. Many children move into more and more bad neighborhoods and are being exposed to gangs, drugs and violence. There are some solutions that we can approach to stop kids from getting involved in these bad influences. One solution is providing programs like the Big Brother Big Sister program to have a role model to guide them down the right path. Another solution is reducing the gangs in neighborhoods and getting them off he streets. If we were able to develop a program were low income families can be located to good neighborhoods and have an agreement to live their instead of a bad neighborhood that would fix the problem. Though there are many solutions making them come true is a different story but there are many programs out there that provide kids with the help and attention they need.

Redefining Structure Social Stratification in MLK’s...

Martin Luther King, Jr. was an eloquent speaker and a powerful figure during the Civil Rights Movement. In â€Å"Letters from Birmingham Jail,† he uses the classical rhetoric to engage his audience and present his ideas clearly. This particular text was initiated due to the non-violent demonstrations in Birmingham, Alabama, which led to the arrest of many African-Americans, including King himself. Although this was not a spoken document, the letter was directed to several targeted audiences: first, the clergymen who wrote â€Å"A Call for Unity,† secondly, the â€Å"white moderate† (47), and finally, to black men and women across the nation who lacked the initial courage to fight for their rights. Dr. King establishes himself as an authoritative voice†¦show more content†¦Another central component of Dr. King’s persona is his desire to remain pacifistic in his exhibitions. He accentuates the â€Å"workshops on nonviolence and†¦ repeatedly a sked†¦ ‘Are you able to accept blows without retaliating?’† (42). The posture that is depicted here informs the viewers that there was no intent to instigate physical abuse or violence at any of the peaceful demonstrations that were organized in Birmingham. After establishing himself as peaceful in his actions, Dr. King is assertive in his demands of reconstruction, stating that â€Å"Non-violent direct action seeks to create †¦ a crisis and foster such a tension that a community which has constantly refused to negotiate is forced to confront the issue† (42). Through the founding of this hard-felt tension, Dr. King aims to convince the â€Å"white moderates† (47) and the clergy that now is the time for negotiations. The elongated excuses and complacency for the longstanding social classification have come to pass and now time had arrived to rise to the occasion. Dr. King’s answer to the clergymen is one of non-violence and diplomatic reasoning. He arranges the four steps taken for successful non-violent action: â€Å"collection of the facts to determine where injustices exist; negotiation; self purification; and direct action† (41) to sustain the notion of tactful protests. At this juncture, the reader