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4044 Uppsatser om Hypothesis testing and t-test - Sida 9 av 270
Jämställdhetens inverkan på föräldrars tid med sina barn
One purpose of our study was to investigate if equality in work time and parental leave in a relationship affect the time that parents spend with their children. Our first hypothesis was that increased equality in work time and parental leave leads to a reduction of the parents? total time with their children, ie the children spend more hours in pre-school and begin pre-school earlier. In order to test our hypothesis, we investigated the relationship between the woman?s and the man?s work time and parental leave and the time that the children spend in pre-school as well as at what age they began pre-school by using two surveys.Our study showed a significant coherence between both working women?s work time and the children?s time in pre-school as well as women?s parental leave and the children?s age at start in pre-school.
En slumpmässig vandring eller genomsnittlig återgång : Råder förutsägbarhet på Stockholmsbörsen?
This study has been conducted in order to determine the existence of predictability for the Stockholm stock exchange. With this purpose the random walk theory has been raised against the theory of mean reversion in order to determine which theory is the most substantial. Data has been collected from Nasdaq OMX Nordic and furtherly been processed using the statistical software EViews. Swedish listed companies? daily share values between 2000-2014 have been analyzed using two tests; an Augmented Dickey Fuller test and a Variance Ratio test.
Svarar människor mer eller mindre socialt önskvärt beroende på hur de genomför ett personlighetstest?
A personality test is a useful tool in recruitment contexts. Studies have shown that participants distort their answers in a socially desirable manner. The purpose of this study was to investigate if people respond more or less socially desirable depending on how they rate themselves in a personality test, based on the "big five" personality dimensions.Eighty people, (40 women and 40 men), 19-42 years, (M= 24,1 SD= 3,76) rated themselves on a personality test. Group one, (20 women and 20 men) completed the test on paper. Group two, (20 women and 20 men) completed the test verbally.
Multipel regressionsanalys av variabler som paverkar BNP
In this report a model was constructed in order to determine how a number of covariates influence the gross domestic product, GDP. The covariates were chosen depending on their expected influence on GDP, for example education and life expectancy. The data used in this report are collected from the World Bank. The model to describe GDP has been calculated using multiple line arregression. In order to reach a reliable final model the number of covariates has been gradually decreased to eliminate insignificant covariates.
Har en goodwillnedskrivning någon effekt på aktieavkastningen? : En eventstudie av bolagen på Stockholmsbörsen
On 1 January 2005, IFRS (International Financial Reporting Standards)was mandatory for all listed companies within the European Union. The introduction is to create a transparent and consistent reporting. Mainly to provide companies, investors and financiers the same access to world capital markets. Since the introduction of IFRS, the goodwill value is determined by annual impairment tests. If an impairment of goodwill is a fact the goodwill decreases in value.
Arbetslöshet, kön, coping och Typ A-beteende- En studie om arbetslösas och arbetandes livssituation.
The aim of this study was to compare unemployed and workers' life situation and the way they cope with different situations and to determine their degree of Type A. We used two different instruments: Friedman and Rosenman?s Type A-test and Carver?s cope test. The total number of respondents amounted to 169 participants. The participants were selected from a convenience sample at the employment service and from three different companies.
en litteraturstudie om musikterapi som behandlingsform : hur musikterapi kan stimulera och utveckla motoriken hos gravt funktionshindrade barn och ungdomar med retts syndrom och cp skada
University of VäxjöSchool of Social SciencesBachelor Thesis in Political ScienceTitle: ?Sverigedemokraternas valframgångar 2006 ? En ulv i fårakläder??Author: Emma Haraldsson and Åsa NeuschützTutor: Emil UddhammarThe aim of this study is to explain Sverigedemokraterna?s electoral success in 2006 and the essay assumes that some form of change has occurred. To study this change two hypotheses have been constructed. The first hypothesis concerns the change within Sverigedemokraterna and the second hypothesis concerns the change of the Swedish voters attitudes.Kirchheimers catch-all theory is used to explain the change in Sverigedemokraterna. The catch-all theory states that parties have to change their structure to maximise the number of votes.
Dominansprofiler - en väg till din inlärningsstil?
In this study the reliability of dominance profiles as a method of establishing a person's learning style was tested. Eight students at Malmö Academy of Music tried three different ways to learn a short melody at the piano. In this way, their preferred way of learning things (either visual, auditive or kinestetic) was established. Five of the students did best when they used a visual cue to learn a melody, and the remaining three did best when auditive cues were used. All but one of the students had the worst result in the kinestetic trial.
Rening av avloppsvatten med anaerob membranbioreaktor och omvänd osmos
This master's theses was carried out on assignment from Stockholm Vatten AB as a part of a project developing new waste water treatment techniques. The goal of the theisis has been to evaluate an anaerobic membrane bioreactor for treatment of waste water from Hammarby Sjöstad. The bioreactor has not been heated and the main interest has been to study the gas production, power consumption and the reduction of organic matter and nutrients.The system has been completed with a reverse osmosis unit and a total of four batch runs have been made with good results. The use of reverse osmosis allows nutrient in the waste water to be reintroduced into circulation as the reverse osmosis concentrate can be used as crop nutrient.The membrane unit is of VSEP ("Vibratory Shear Enhanced Processing") type and an extensive membrane test has been conducted. This so called L-test helped determine the most suitable type of membrane for the system to allow a higher ±ux and thus lower power consumption.
Sverigedemokraternas valframgångar 2006 : - En ulv i fårakläder?
University of VäxjöSchool of Social SciencesBachelor Thesis in Political ScienceTitle: ?Sverigedemokraternas valframgångar 2006 ? En ulv i fårakläder??Author: Emma Haraldsson and Åsa NeuschützTutor: Emil UddhammarThe aim of this study is to explain Sverigedemokraterna?s electoral success in 2006 and the essay assumes that some form of change has occurred. To study this change two hypotheses have been constructed. The first hypothesis concerns the change within Sverigedemokraterna and the second hypothesis concerns the change of the Swedish voters attitudes.Kirchheimers catch-all theory is used to explain the change in Sverigedemokraterna. The catch-all theory states that parties have to change their structure to maximise the number of votes.
Utveckling av generell testklient för Nordic Growth Market
Development and accuracy tests of advanced exchange trading systems require well adjusted tools for testing. Aptness of these tools are probable to have a major impact on identification of bugs and verification of new functionality. Identifying erroneous parts and bottlenecks of the trading system is of outmost importance for the exchange as a whole since stability and correctness are two of the determinant factors its viability is measured by. This paper covers how this test-tool was created and the motivation behind the design choices made. The tool was created with the goal to be broad enough to cover the majority of cases that could arise, fast enough to be able to test the trading systems speed limitations (i.e.
Dominansprofiler - en väg till din inlärningsstil?
In this study the reliability of dominance profiles as a method of establishing a person's learning style was tested. Eight students at Malmö Academy of Music tried three different ways to learn a short melody at the piano. In this way, their preferred way of learning things (either visual, auditive or kinestetic) was established. Five of the students did best when they used a visual cue to learn a melody, and the remaining three did best when auditive cues were used. All but one of the students had the worst result in the kinestetic trial.
Hur marknaden bedömer europeiska företagstillkännagivanden vid etablering i BRIC länder
The aim of this study is to examine how European companies? stock price is affected by an announcement about foreign direct investment in one of the BRIC countries. Another aim for the study is to examine if the market reacts differently to the three modes of entry methods in a given BRIC country and to examine if the market reacts differently to different European countries. The study also set out to answer if there were any effects of the three modes of entry that was visible a short time after the announcement. To answer and examine this, the authors used the event study approach. The study was conducted with a sample of 47 companies from France, Norway, Spain, Sweden and Germany.
Metodjämförelse mellan instrumenten Vitros 5,1 FS och QuikRead CRP för analysen P-CRP
In studies of serum, in the early 1930s, from patients with pneumonia, a factor was found. It could agglutinate certain pneumococcal species. This factor, which later became known as C-reactive protein (CRP), increased sharply during the early and middle stages of the disease. CRP was identified as an acute phase protein and found especially in bacterial infections. CRP is synthesized in the liver by stimulation of interleukin 6 (IL-6), which is produced by the monocytes, and consists of five non-covalently bound subunits.The aim of this study was to compare two different analytical instruments (Vitros 5.1 FS Ortho-Clinical Diagnostics and QuikRead CRP Orion Diagnostica) for CRP analysis.
Feeding preferences and foraging in Larvae of Manduca sexta and Spodoptera littoralis : a laboratory study based on olfaction
Larvae of Lepidopteran Manduca sexta and Spodoptera littoralis are pests of economical importance in several horticultural and agricultural crops. Knowledge of
insect feeding preferences and behavior is crucial in order to find economically and ecologically sustainable solutions to the problems caused by these herbivores.
The aim of this thesis was to study the behavior and the induced feeding preferences in larvae of M. sexta and S. littoralis when reared on certain host plants.
The hypothesis was that larvae of M. sexta would have an innate preference for plants of the Solanaceae family and therefore discriminate the previously experienced nonhost
when faced with the choice between a true host and the previous food source.