conditions‚ equal variancesi and independence of the random samples‚ are still required for the Wilcoxon rank sum test. Because the two population distributions are assumed to be identical. under the null hypothesis‚ independent random samples from the two populations1 should be similar if the null hypothesis is true. Because we are now allowing thei population distributions to be nonnormal‚ the rank sum procedure must deal with1 the possibility of extreme observations in the data. One way to handle samples
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Research Method Selection: Deciding Between Grounded Theory and phenomenology. Electronic Journal of Business Research Methods Volume 9 . 9. Slideshare. (2013). Retrieved September 14th‚ 2013‚ from Slideshare.Inc: http://www.slideshare.net/rao_sahab/hypothesis-12915876?from_search=1 10 11. Statistics and Probability Dictionary. (2013). Retrieved September 15th‚ 2013‚ from Stat Trek‚ University of Liverpool: http://stattrek.com/statistics/dictionary.aspx?definition=sample_design 12 13. Umesh‚ D. B. (n
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ASSIGNMENT -1 Name – Sunita Uikey Roll No - 155 MIM Subject - Research Methodology Exercise 1: Make up 3 different situations in which motivation to work would be an independent variable‚ moderating variable and dependent variable. Solution - Dependent Variable - A manager observes that motivation to work among the Employees is increased if he increases their working environment‚ Salary and perks. Independent variable- Performance of employees increased if they are motivated
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Spatial Awareness: the ability to be aware and conscious of ourselves and objects in our environment‚ and their movement in space in relation to each other. Experimental hypothesis: males will correctly identify more shape pairs than females in a mental shape rotation task measuring spatial awareness. Null hypothesis: there will be no difference in the number of right answers achieved by males and females in the mental shape rotation task measuring spatial awareness‚ except due to chance.
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Business Statistics‚ 9e (Groebner/Shannon/Fry) Chapter 10 Estimation and Hypothesis Testing for Two Population Parameters 1) The Cranston Hardware Company is interested in estimating the difference in the mean purchase for men customers versus women customers. It wishes to estimate this difference using a 95 percent confidence level. If the sample size is n = 10 from each population‚ the samples are independent‚ and sample standard deviations are used‚ and the variances are assumed equal‚ then
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were mixed to create a solution and placed into three test tubes. The first test tube was placed in 0 degrees Celsius‚ second test tube 22 degrees Celsius‚ and third in 95 degrees Celsius. The null hypothesis is when the temperature is changed; the concentration will not be affected. The alternate hypothesis is the more the temperature increases‚ the more the concentration decreases; as the temperature decreases‚ the concentration increases. Results: In the experiment‚ there are patterns within the
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Introduc on Lab 1 The Scien c Method 13 14 Lab 1 : Scien c Method Concepts to explore: Concepts to explore: x x x x x x x x Testable observa ons Hypothesis Null hypothesis Experimental approach Variables Controls Data collec on Analysis Introduc on What is science? You have likely taken several classes throughout your career as a student‚ and know that it is more than just chapters in a book. Science is a process that uses evidence to understand
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HYPOTHESIS A hypothesis is a formal tentative statement of the expected relationship between two or more variables under study. Definition: A hypothesis is an assumption statement about the relationship between two or more variables that suggest an answer to the research question. OR Good & Hatt define hypothesis as shrewd guess or inference that is formulated and provisionally adopted to explain observed facts or conditions and
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The Augmented Dickey Fuller (ADF) test is used to determine the order of integration. The results for the ADF test are presented in Table 1 below. The null hypothesis for the ADF test was that the series has a unit root and is therefore nonstationary. However‚ the model does not provide enough evidence to reject the Null hypothesis for all the markets analyzed. All the variables are nonstationary in the levels but are stationary in their first differences. Therefore all the variables are
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These are to be written individually even if you worked in a group. Lab Topic: ________________________________________________ Introduction: What was your null hypothesis? be specific A change in temperature in the reaction of catechol and catecholase will not change the absorbance of reaction over time. What was your alternative hypothesis? be specific As the environment and temperature is changed from 0 °c to 20°c to 95°c‚ the absorbance of catechol and catecholase reaction will increase over
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