Class Action Lab Report Essay examples - 1100 Words

Joseph Sulaiman Alya Abourezk 4/13/12-4/14/12 Class Action Lab Report Purpose: To determine, through observations, the identity of substances produced in a chemical reaction. Materials: Safety Goggles Stirring rod Magnesium ribbon Solid CuSO4†¢H2O Matches Test tubes Copper metal 3M HCl Red and blue litmus strips 0.1M AgNO3 Zinc metal 0.1M Pb(NO3)2 Test tube holder 0.1M KI Bunsen burner 0.1M Na2NO3 Crucible tongs 1.0M NaOH Water (H2O) 0.1M Ca(NO3)2 50mL beaker 1.0 CuSO4 Procedure: Using the crucible tongs, take a magnesium strip and hold it in hot spot (just above the inner cone of fire) on the bunsen burner. Use peripheral vision as not to damage your eyes and hold the tongs well so the†¦show more content†¦Dispose in the waste beaker. In a clean test tube place 1mL of Na2CO3. Add 1mL of Ca(NO3)2 to the sodium carbonate solution. In a clean test tube place 1mL of NaOH. add 1mL of CuSO4 to the sodium hydroxide solution. Observations: Chemical Equation Initial Observation Final Observation Type of Reaction 2Mg+O2 -- 2MgO shiny, metallic, grey strip white, powdery, chalky substance synthesis, combustion MgO+H2O -- Mg(OH)2 chalky Mg and clear, colorless water create milky white, but clear solution Red litmus: turned slightly blue Blue litmus: no obvious change synthesis CuSO4†¢H2O -- CuSO4+5H2O cobalt blue crystal blue substance turned white, rocky, opaque-yellowish deposit, water vapor decomposition CuSO4+5H2O -- CuSO4†¢H2O clear, colorless water, white, rocky copper substance crackling, white dissolved, created a blues clear substance decomposition, synthesis 2HCl+2Zn -- H2+2ZnCl Zinc is silver, lustrous; HCl clear and colorless Zn bubbled in the HCl solution single displacement, synthesis 2ZnCl+H2 -- 2HCl+2Zn Zinc was bubbling when exposed to fire, the H gas made a popping noise single displacement 2AgNO3+Cu -- Cu(NO3)2+Ag2 clear, colorless AgNO3; bronze lustrous copper balls Cu gave off bubbles and were coated in a black, near mold like, substance single displacement Pb(NO3)2+2KI -- PbI2+2KNO3 2 clear, colorless substances bright, sunshine yellow substance (residue, solid powder) double displacement Na2CO3+Ca(NO3)2 -- 2NaNO3+CaCO3Show MoreRelatedLaboratory Management- General Functions of a Laboratory Manager1249 Words   |  5 Pagesassignment the general functions of a laboratory manager is being discussed. 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Economics and Quantitative Analysis Economy

Question: (a) Provide a descriptive analysis of the two variables (e.g., mean, standard deviation, minimum and maximum). (b) Develop a scatter diagram with retention rate as the independent variable. What does the scatter diagram indicate about the relationship between the two variables? (c) Develop and estimate a regression equation that can be used to predict the graduation rate (%) given the retention rate (%). (d) State the estimated regression equation and interpret the meaning of the slope coefficient. (e) Is there a statistically significant association between graduation rate (%) and retention rate (%). What is your conclusion? (f) Did the regression equation provide a good fit? Explain. (g) Suppose you were the president of South University. After reviewing the results, would you have any concerns about the performance of your university compared to other online universities? (h) Suppose you were the president of the University of Phoenix. After reviewing the results, would you have any concerns about the performance of your university compared to other online universities? Answer: Introduction The two variables that are used within this report for the performance of several universities are named as the graduation rate and a retention rate. The graduation rate is dependent on the retention rate where the retention rate means the rate at which the students continue their education from the same university. Through it, the graduation rate will likely increase because the retention rate is higher. This would mean that the increase in the retention rate will have a positive increasing effect on the graduation rate which needs to be assessed through scatter plot and regression equation (Beldona, 2010). Other statistical tools will also be used like min and max method, mean and standard deviation. The min method provides us with the most minimum retention rate among the universities and the most minimum graduation rate among the universities. The max method will provide us with the most maximum retention and graduation rate. The mean will provide the analyst with the most common percentage among the universities signifying the retention rate and graduation rate. The standard deviation will provide us the variability from the mean. The scatter plot will facilitate in identifying the relationship between the two variables and the regression equation will help in illustrating the relationship in an equation. Purpose The 29 online universities are to be analyzed in accordance with their performance using statistical tools to statistically analyze the data for it. Those statistical measures would include the min-max method, scatter plot, mean, standard deviation and regression equation. All of the terms are already explained in the previous section. The purpose would notify as to how the two variables are interrelated with each other. Background The statisticians use these measures to understand the dataset provided within the study. The statistical tools will help us in understanding the statistical relationship between the two variables and hence, it would be quite effective to apply the statistical tools to determine the exact relationship between the two variables. (Armstrong, 2013) In accordance with the regression equation, this is the most significant statistical tool because the relationship between the two variables is described in to an equation where the relationship provides us with a good analysis of the independent and dependent variable. This is done through an equation below: Y = m X +c The retention rates and graduation rates have been a in significant relation between each other which has resulted the retention rate to officially think of it that all such retention rates were increasing and the graduation rates are decreased. Method Firstly, mean is determined which would let us know the most common rate among the 29 online universities. The mean would identify the most common rate in accordance with the retention rate and graduation rate. In the same way, then standard deviation method will let the statisticians know as to how much variability is there from the determination of mean. Some other methods like min and max method. The min means the least possible value for the retention rate or graduation rate. However, the scatter plot will also be used which represents the illustration of the graph through which the type of relationship will be evident. There are three types of relationship which can be illustrated through a scatter plot (Kahng, 20010). The first one is known as a positive relationship between the two variables. That means that when X increases, Y also increases. Then there exists a negative relationship. That means that when X increases, Y decreases or when X decreases, Y increases. Therefore, t he two variables are then negatively correlated. After that, the third type of relationship is the no relationship (Omran, 2010). This means that there is no resultant increase in Y with an increase in X. Both the variables remain unchanged. Then the regression method is also used to describe the relationship between the two variables in an equation form. Results The results for the given data are shown below: Astatisticaltechnique used to explain or predict the behaviour of adependent variable. Generally, aregressionequationtakestheformof Y= m X + c , where Y is the dependent variable that the equationtriesto predict, X is theindependent variablethat is being used to predict Y, a is the Y-intercept of the line, and c is avaluecalled the Y intercept (Kahng, 2013). It can be seen that the mean retention rate is 57.4% while the mean graduation rate is 42%. The standard deviation for the retention rate is 23% while the standard deviation for the graduation rate is 9.8%. The max retention rate is 100% while the max graduation rate is 61%. The minimum retention rate is 4% while the minimum graduation rate is 25%. The most common retention rate among the universities is 57.4% emulated by the graduation rate of 42%. Scatter Plot The scatter plot for this data set is shown as under: The m slope is calculated as the graduation rate = M x retention rate + 25.4%. Hence According to the author, the scatter diagram shows a positive relationship between the two variables. However, at certain instances, the retention rates are lower and the graduation rates are substantially higher (Murnance, 2013). This is a great concern for the statistical analyst from this point of view. However, to sum up as a whole, the retention rate increases due to which the graduation rate also increases. Regression equation The regression equation can be described as the relationship between the two variables being studied or researched. It also makes sense for the dependent of any influence on the subject through these two variables (Abernathy, 2011). The regression equation is as under: The above regression equation is Y = 0.284 X + 25.423. Y is the graduation rate, X is the retention and 25.423 is the Y intercept. Hence, the positive relationship is quite significant from the above universities. And, this can be proved in this manner: Y = 0.2845 x 35 + 25.423 = 35% Y = 0.2845 x 40 + 25.43 = 36% Therefore, the increase in any positive aspects will prove to be a great source of influence on the graduation rate. Discussion and Recommendations The University of South has a favorable graduation rate along with a retention rate. The graduation rate increases because the retention rate increases as it has been discussed above already. But the first and foremost concern is that some of the universities have lower retention rates but their graduation rates increase and that might be due to the fact that the retention rate is decreasing. Apart from this, the Universities of Phoenix has a lower retention rate and the most surprising fact is that the graduation rates also increase (Karafiath, 2014). The graduation rates are solely dependent on the retention rate. With such a lower retention rate, the graduation rates are increasing. This would mean that when the retention rate increases, the graduation would increase more than all this. This is due to the fact that with a lower retention rate, the graduation rate is still more favorable. Bibliography Abernathy, J.R., 2011. Smoking as an independent variable in a multiple regression analysis upon birth weight and gestation. BMJ Journal, 56(4), pp.626-33. Armstrong, J.S., 2013. Illusions in Regression Analysis. International Journal of Forecast, 3(2), pp.689-94. Beldona, S., 2010. Regression analysis for equipment auditing. Managerial Auditing Journal, 22(8), pp.809-22. Kahng, S., 20010. TEMPORAL DISTRIBUTIONS OF PROBLEM BEHAVIOR BASED ON SCATTER PLOT ANALYSIS. Journal of Applied Behavior Analysis, 31(4), pp.593-604. Kahng, S., 2013. TEMPORAL DISTRIBUTIONS OF PROBLEM BEHAVIOR BASED ON SCATTER PLOT ANALYSIS. Journal of Applied Behavior Analysis, 31(4), pp.593-604. Karafiath, I., 2014. Estimating cross-sectional regressions in event studies with conditional heteroskedasticity and regression designs that have leverage. International Journal of Managerial Finance, 10(4), pp.418-31. Murnance, J., 2013. U.S. High School Graduation Rates: Patterns and Explanations. Journal of Economic Literature, 51(2), pp.370-422. Omran, M., 2010. Linear Versus Nonà ¢Ã¢â€š ¬Ã‚ linear Relationships Between Financial Ratios and Stock Returns: Empirical Evidence from Egyptian Firms. Review of Accounting and Finance, 3(2), pp.84-102.

Oedipus the King Guilty or Innocent free essay sample

A Reaction Paper in English 106 (Greek Drama) Oedipus the King: Guilty or Innocent Submitted to Dr. Ulysses B. Aparece Submitted by Elmer J. Mangubat Guilty or Innocent Guilt presupposes the commission of sin; yet what comprises sin? From the moral standpoint, sin is the denial of what is good that is ought to be done or to happen; or sin is the omission of what is ought to be done. For sin to be categorized as such, there has to be a set of moral standards from which judgment on whether sin happens or not proceeds. Thus, to say Oedipus is guilty remains to be seen.Proponents have long debated over Oedipus’s guilt or innocence. I would like to react on some of P. H. Vellacot’s assertions on the guilt of Oedipus. Firstly, Vellacot says â€Å"the terrible destiny of Oedipus is shown as one put upon him by supernatural powers in general, by that comprehensive Fate which governs every man’s life. We will write a custom essay sample on Oedipus the King: Guilty or Innocent or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page † At the onset of his commentary, Vellacot seems to suggest that Oedipus is already latched into this tragic path of destiny—as ordained by Fate, with the concurrence, of course, of the gods.In the intricate lives of Greek heroes and heroines, the role of the gods and goddesses is a predominant theme. It is not surprising, therefore, that Oedipus is no exception. It’s as if his fate has long been sealed, and the oracles and prophesies are just a confirmation to this tragic playing of his role. As the term comprehensive suggests, Oedipus is bound to follow his fate as preordained by the powers that be. Secondly, Vellacot argues that if everything is because of fate then Oedipus is without sin; therefore, there can be no tragedy.Then he purports this question: â€Å"How can there be a true tragedy without sin? † Following this line of thinking, Vellacot asserts that Sophocles must provide the sound claim for Oedipus’s sin to justify the tragic character of the play—thus Oedipus’s false accusations on Tiresias and Creon. To Vellacot, however, this move is just Sophocles’ ploy of adding sin to justify Oedipus’s downfall. This assertion of Vellacot might be bordering on speculation, yet there could be a grain of truth in it.The assertion is seemingly a potent ploy of Vellacot himself to heighten the debate over Oedipus’s guilt, which is epitomized by the question: â€Å"How can there be a tragedy without sin? † The forego ing propositions of Vellacot on Oedipus’s innocence pave the way for Vellacot’s rebuttal—that although it was clear that the oracle had spoken, Oedipus had full awareness of the things that he should and could have avoided through the premonitions of the drunkard, and later of Tiresias.With the premonitions in place, the foremost thoughts of Oedipus should have been, as Vellacot purports, to avoid (1) killing an old man and (2) avoid marrying an elderly woman. The literary critic E. R. Dodds shares a similar view with Vellacot. The moralist, as he says, might ask, â€Å"Knowing that he was in danger of committing patricide and incest, would not a really prudent man have avoided quarreling, even in self-defense, with men older than himself, and also love-relations with women older than himself? † This is a very valid claim, indeed.Oedipus could have exercised self-control knowing that even the slightest of probabilities could trigger that rush of fate. Dodds reasons, however, that these considerations would have been in place had we been scrutinizing the character of a person. Instead, we should look at it in the light of the dramatist perspective, as Dodds puts it: â€Å"We are examining the intentions of a dramatist, and we are not entitled to ask questions that the dramatist did not intend to ask. † On a personal note, I would say to some degree that Oedipus has certain culpability toward his actuations.Although the Greeks perceive their gods as if they were one with them in all that they do, the fact remains that Oedipus is still a human being; and part of his humanity is that he has the intellect and the will. To some degree, he has the will and freedom to check his actuations in the different circumstances that he is in. This would have been the ideal way that Oedipus could have played his role. However, questions would hound us again: Who are we to question the dramatist’s intentions? What would become of the play—of the tragedy in particular—had things gone the other way?

How to Hire a Research Paper Writer

How to Hire a Research Paper Writer How to Hire a Research Paper Writer It may be something that you dread, but during the course of your education, you will be required to write research papers. This is a big part of much of the grade in certain majors, so if you want to get the best grades possible, you will need to turn in excellent research papers. However, this may be a challenge sometimes because of all the work you have to do, along with your busy life and schedule. There may be times when you are not able to get all of your work done by yourself. This is when you should hire a research paper writer to write your paper for you. However, you need to know exactly how to do this. Where to Find Research Paper Writers You may wonder how you can get help with your research paper, but all you need to do is look online. There are plenty of experienced, professional freelance research paper writers available on one of the many academic paper writing sites online. Just do a relevant search for keywords that pertain to what you want, such as ‘research paper writers’ or ‘online academic paper writers.’ Just be sure to ask questions before you use any service, so that you will have an idea of their process. Hiring a Research Paper Writer As stated above, the most important thing to remember when hiring a professional  research paper writer online is choosing a writing site that will give you the best paper for your money. Check out the site’s FAQ and Policies sections. There you should find all of the relevant information that you need. Do not use a writing company online that does not let you know all of the information you need to know up front. Also, it is best to ask for a sample of work from the company, so that you can see the quality and style of the work produced. It is also a good idea to make sure they have a free revision policy, as well as a money-back guarantee, just in case you are dissatisfied with the paper you receive. If your research paper is lengthy, it is a good idea to have the writers do it in segments. This way you can pay as you go, until the paper is completely finished. If, during this time, you are dissatisfied with a segment, you can have another company do the remainder of the paper. After you have gathered information from the company and are satisfied with the answers to your questions and the sample you received, make your choice. Then, when you decide on a company, submit your order, and wait for delivery. It’s that simple.

English Contractions for ESL

English Contractions for ESL English contractions are shortened forms of helping or auxiliary verbs in both positive and negative sentences. Contractions are generally used in spoken English, but not in formal written English. However, written English is becoming more informal (emails, notes to friends, etc.) and you will often see these forms in print. Heres an example from a business email: Ive been working on a new project. It hasnt been easy, but next week Ill finish. This example shows three contractions: Ive / hasnt / Ill. Learn the rules of contraction use in English below. Each of the following English contractions includes an explanation of the full form and example sentences to provide context for understanding. Positive Contractions Im : Im waiting for my friend.Ill : Ill see you tomorrow.Id : Id better leave now. OR Id already eaten by the time he arrived.Ive : Ive worked here for many years. Youre : Youre joking!Youll : Youll be sorry!Youd : Youd left before he arrived, hadnt you? OR Youd better hurry up.Youve : Youve been to London many times. Hes : Hes on the phone now. OR Hes been playing tennis since 10 this morning.Hell : Hell be here tomorrow.Hed : Hed prefer to meet you later in the week. OR Hed finished before the meeting began. Shes : Shes watching TV at the moment. OR Shes had a lot of trouble lately.Shell : Shell be at the meeting.Shed : Shed been working for two hours when he telephoned. OR Shed like to have a glass of wine. Its : Its been long time since we saw each other last. OR Its very difficult to concentrate.Itll : Itll be here soon.Itd : Itd be difficult to say no. OR Itd been a long time. Were : Were working hard on the Smith account this week.Well : Well begin when he arrives.Wed : Wed better hurry up if we want to catch the train. OR Wed finished the meeting before you arrived.Weve : Weve been waiting for you! Theyre : Theyre studying German this afternoon.Theyll : Theyll finish soon if they concentrate.Theyd : Theyd eaten their lunch when she stopped by to say hello. OR Theyd rather not come to the meeting.Theyve : Theyve just purchased a new home. Theres : Theres a hotel in the next town. OR Theres been too many telephone calls today!Therell : Therell be a price to pay!Thered : Thered better be a good explanation for this. OR Thered be some reason for that. Thats : Thats been on my mind lately. OR Thats why I cant come.Thatll : Thatll happen sooner than you think.Thatd : Thatd be the reason why. OR Thatd happened before my time. Negative Contractions arent : They arent coming next week.cant : I cant understand you.couldnt : He couldnt get his shoes on!didnt : We didnt visit Rome. We went straight to Florence.doesnt : He doesnt play golf.dont : They dont like cheese.hadnt : I hadnt thought of that!hasnt : She hasnt telephoned yet.isnt : She isnt listening to you.mustnt : Children mustnt play with fire.neednt : You neednt worry about that.shouldnt : You shouldnt smoke cigarettes.wasnt : I wasnt joking when I said that.werent : They werent invited to the party.wont : I wont be able to attend the conference.wouldnt : She wouldnt be surprised if he showed up at the party. Contractions in Speech English learners should become familiar with contractions in order to understand the grammar of what is said quickly. Native English speakers tend to speak quickly and glide over function words such as helping verbs. Most English contractions are contractions of helping verbs, so an understanding of the role these contracted helping verbs play in grammar can help you better understand spoken English. English learners should feel free to use contractions whenever they speak, but the use of contractions is not required. If you prefer to speak using full helping verb forms, continue to do so, but become familiar with contractions in order to help your understanding.

Human genome Term Paper Example | Topics and Well Written Essays - 500 words

Human genome - Term Paper Example One of the most contentious issues coming up over the next few years will surely be whether to allow human genomes to be patented. Human rights advocates are concerned that allowing patents will infringe on human dignity by giving permission to certain organizations to keep records of a person's genome records and is an invasion of privacy, sort of (Patrinos & Ansorge, 2005, p. 391). Human genome patents is shaping up as a huge social controversy because of its far-reaching implications on research such as those dealing with genetic defects that can cause inherited diseases. Patents are crucial to give encouragement to researchers so that their efforts will be amply rewarded, similar to the copyrights of authors and artists who want royalties for their creative talents. Patents in the context of medical research has effects on how well human beings can live their lives, whether disease-free or not, for example.

William Shakespeares Macbeth Essay Example | Topics and Well Written Essays - 1250 words

William Shakespeares Macbeth - Essay Example Thus, there are spectacular evidences all through the characterisation and the plot of the play which suggest the importance of the Elizabethan culture in the representation of 'gender' in Macbeth. Therefore, a paradox of sexual confusion and gender roles is evident at the heart of the play. "'Macbeth, a virile warrior-hero, is at the same time an 'unfinished man' who murders because he has been convinced by his wife that only through violence will he achieve a state of heroism. His manhood, displayed in the utterly 'masculine' form of bloodshed, is not self-determined or innate, but rather infused into him by Lady Macbeth." (Sch'rkhuber, 2007, p. 75). Therefore, this paper analyses Shakespeare's representation of 'gender' in Macbeth and compares it with the representation of 'gender' in the 21st Century referring to current literature, media, and poetry. One of the central concerns of the critics of the play Macbeth has been the author's representation of feminism in the play which is noted for the reversal of gender roles. Thus, one finds that the playwright has been interested in representing females as dominating their counterparts and the major characters and themes of the play depict the difference in the sexual representation of males and females. Whereas both Lady Macbeth and Macbeth are obsessed by the same passion of ambition, the playwright represents its effect differently in males and females. Lady Macbeth, the chief representative of females in the play, evidently violates the natural law concerning gender roles and the character of Macbeth enhances the reversal of gender roles in the play. "Both Lady Macbeth and Macbeth are fired by the same passion of ambition. However, while Macbeth is presented as violating moral law, Lady Macbeth seems to violate natural law: she is unfeminine. By eliminating in herself and her hus band tenderness, pity and vulnerability to feeling - human qualities her culture tends to associate with women - Lady Macbeth becomes half man herself. Through his efforts to be supreme among all men, Macbeth re-enacts the ambivalence of his sexual identity: the more he tries to prove his masculinity, the greater his fusion with Lady Macbeth." (Sch'rkhuber, 2007, p. 75). Therefore, it is palpable to a careful reader of the tragedy that Lady Macbeth makes an essential attempt to assume masculine characteristics which can make herself a stronger person. In addition, she also disparages her male counterpart, Macbeth, by attacking his own masculinity. "Macbeth shows a reversal in gender roles. The play questions what constitutes masculinity and femininity. It is important to Macbeth to be seen as a strong, powerful man. Lady Macbeth taunts him and mocks his sexuality to force him to get the courage to kill Duncan." (Thacker, 2008). In a careful analysis of the representation of feminism and masculinity in the play, one recognises that there is an evident reversal of gender roles by the playwright which can be comprehended as an attempt to identify with the contemporary Elizabethan culture.